WO2023277069A1 - Method for producing negative-strand rna virus vector and produced negative-strand rna virus vector - Google Patents
Method for producing negative-strand rna virus vector and produced negative-strand rna virus vector Download PDFInfo
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Definitions
- the present invention relates to a method for producing a minus-strand RNA viral vector and the produced minus-strand RNA viral vector.
- Minus-strand RNA viral vectors typified by Sendai virus vectors
- Minus-strand RNA viral vectors typified by Sendai virus vectors can be advantageously produced in packaging cells by producing them from cDNA (Patent Document 1).
- E3L of vaccinia virus is a double-stranded RNA-binding protein and has been reported to promote interferon resistance and intracellular proliferation (Non-Patent Document 1).
- PSR protein kinase R
- Inhibition of protein kinase R (PKR) using K3L, E3L, VAI RNA, EBER, ⁇ 3, TRBP, and combinations thereof in the production of poxvirus or vaccinia virus, PKR being a double-stranded RNA binding protein is disclosed (Patent Document 2).
- C8L and K3L are pseudosubstrates of protein kinase R (PKR) (Non-Patent Document 2).
- NS5A or NS5A(1-148) may inhibit antiviral activity against HCV (Non-Patent Document 3).
- a virus production method using VAI RNA has been disclosed (Patent Document 3).
- the present invention provides a method for producing a minus-strand RNA viral vector and the produced minus-strand RNA viral vector.
- the present inventors found that, in a method for producing a minus-strand RNA virus , It was found that allowing the packaging cell to express the genomic RNA of the minus-strand RNA virus to form the minus-strand RNA virus increased the amount of virus produced in the packaging cell.
- a method for producing a negative-strand RNA virus or viral vector comprising: from a gene encoding a protein kinase R (PKR) inhibitory factor (e.g., a PKR inhibitory viral factor, human nc886, human p58 IPK , or NS5A, or a combination thereof) operably linked to a regulatory sequence; expressing and supplying the factor to packaging cells; Expressing the genomic RNA of a minus-strand RNA virus or viral vector in a packaging cell to form a minus-strand RNA virus or viral vector in the presence of said factor ⁇ e.g., a PKR-inhibiting factor, e.g., a PKR-inhibiting expressing the genomic RNA of the minus-strand RNA virus or viral vector in the packaging cell in the presence of the viral factor of to form the minus-strand RNA virus or viral vector;
- the described DNA can be used to express the genomic RNA
- the PKR inhibitory factor is adenovirus VAI RNA, EB virus EBER, human nc886, HIV virus TAR, poliovirus 2A pro , vaccinia virus E3L, reovirus ⁇ 3, influenza virus NS1 , human p58 IPK , hepatitis C virus NS5A, vaccinia virus K3L, HIV virus Tat, herpes simplex virus Us11, and herpes simplex virus ICP34.5, and orthologs thereof.
- the minus-strand RNA virus or viral vector is produced in the absence of a helper virus.
- the genomic RNA further comprises a gene encoding a PKR inhibitory factor operably linked to the regulatory sequence.
- the packaging cell has genomic DNA having a gene encoding a PKR inhibitory factor operably linked to a regulatory sequence.
- the packaging cells are Vero cells or LLC-MK2 cells.
- the method described in . (9) The RNA genome of a negative-strand RNA virus or viral vector that expressably contains a gene encoding any one or more of the PKR inhibitory factors.
- (10) A minus-strand RNA virus or viral vector comprising the RNA genome of (9) above.
- (11) The minus-strand RNA virus or viral vector according to (10) above, further comprising a target gene.
- (12) A composition comprising the minus-strand RNA virus or viral vector of (10) or (11) above.
- composition according to (12) above which has an infectious titer of 1 ⁇ 10 5 CIU/mL or more.
- (16) The composition according to (12) above, which has an infectious titer of 1 ⁇ 10 6 CIU/mL or more.
- (17) The composition according to (12) above, which has an infectious titer of 1 ⁇ 10 7 CIU/mL or more.
- (18) The method according to any one of (1) to (8) above, wherein the PKR inhibitory factor has the sequence set forth in any one of SEQ ID NOS: 4-31.
- Forming a negative-strand RNA virus or viral vector comprises placing in the packaging cell a plasmid having a gene encoding viral genomic RNA operably linked to a second control sequence and a third control (1) to (8) above, comprising introducing a plasmid having a gene encoding a viral component operably linked to a sequence and expressing the genomic RNA and the viral component in the cell.
- the method according to any one of (27) The method according to (26) above, wherein the third regulatory sequence is the EF1 ⁇ promoter and the viral component comprises either or both of the N protein and the L protein.
- the third regulatory sequence is the EF1 ⁇ promoter, and the viral component is one or more selected from the group consisting of N protein, P protein and L protein, or all of them.
- the method of. (9) The method according to (28) above, wherein the packaging cells are Vero cells.
- the third regulatory sequence is the EF1 ⁇ promoter and the viral component comprises either or both of the P protein and the L protein.
- the third regulatory sequence is the EF1 ⁇ promoter and the viral component is the L protein.
- the packaging cells are LLC-MK2 cells.
- the packaging cells are LLC-MK2 cells.
- the PKR inhibitory factor is A method according to any of the above, comprising (i) E3L or a portion thereof, preferably a peptide comprising at least the C-terminal 107 amino acids of E3L, and (ii) K3L. (35) the PKR inhibitory factor is A method according to any of the above, comprising (i) E3L or a portion thereof, preferably a peptide comprising at least the C-terminal 107 amino acids of E3L, and (iii) Y3. (36) The method according to (34) above, wherein the PKR inhibitory factor further comprises VAI. (37) The method according to (35) above, wherein the PKR inhibitory factor further comprises VAI.
- the PKR inhibitory factor comprises VAI
- VAI is a molecule having the sequence set forth in SEQ ID NO:17.
- the PKR inhibitory factor comprises VAI and the PKR inhibitory factor is a molecule having the sequence set forth in SEQ ID NO:19.
- the PKR inhibitory factor is a molecule having the sequence set forth in any of SEQ ID NOS: 18, 21-26.
- the PKR inhibitory factor comprises nc886.
- the PKR inhibitory agent is a molecule having the sequence set forth in SEQ ID NO: 13 or 14.
- the genomic RNA has a gene encoding a target protein
- the PKR inhibitory factor is VAI or a sequence according to any one of SEQ ID NOS: 17-26. wherein VAI is contained in the 3'UTR of a gene encoding said protein of interest.
- the packaging cell has genomic DNA having a gene encoding a PKR inhibitory factor operably linked to a regulatory sequence.
- the packaging cells are Vero cells or LLC-MK2 cells.
- the packaging cells are a cell population consisting of Vero cells or a cell population consisting of LLC-MK2 cells, and do not contain other cells. The method described in .
- RNA genome according to (9) above which has a gene encoding a target protein, and wherein the PKR inhibitory factor has VAI or a sequence according to any one of SEQ ID NOS: 17-26.
- molecule wherein the RNA molecule having a sequence set forth in VAI or any of SEQ ID NOS: 17-26 is contained in the 3'UTR of a gene encoding said protein of interest.
- a minus-strand RNA virus or viral vector comprising the RNA genome of (47) above.
- a method for producing a negative-strand RNA virus or viral vector comprising: expressing the factor from the gene encoding NS5A operably linked to regulatory sequences and supplying it to packaging cells; expressing the genomic RNA of a negative-strand RNA virus or viral vector in a packaging cell in the presence of NS5A to form a negative-strand RNA virus or viral vector; recovering the formed negative-strand RNA virus or viral vector; including the relationship between said virus or viral vector and said NS5A is heterologous and/or the relationship between said regulatory sequence and said NS5A is heterologous; Method.
- a method for producing a negative-strand RNA virus or viral vector comprising: expressing the factor from a gene encoding the PKR-inhibiting factor operably linked to regulatory sequences and supplying it to packaging cells, wherein the PKR-inhibiting factor is human nc886 (VTRNA2-1) and either or both of human p58 IPK ; allowing the packaging cell to express the genomic RNA of the negative-strand RNA virus or viral vector in the presence of the PKR inhibitory factor to form a negative-strand RNA virus or viral vector; recovering the formed negative-strand RNA virus or viral vector; including, wherein the relationship between the regulatory sequence and the PKR inhibitory factor may be heterologous; Method.
- the minus-strand RNA virus or viral vector is a Sendai virus vector.
- the genomic RNA further comprises a gene encoding a PKR inhibitory factor operably linked to the regulatory sequence.
- the packaging cell has genomic DNA having a gene encoding a PKR inhibitory factor operably linked to a regulatory sequence.
- the packaging cells are Vero cells or LLC-MK2 cells.
- RNA genome of a negative-strand RNA virus or viral vector that expressably comprises a gene encoding any one or more of the PKR inhibitory factors.
- a minus-strand RNA virus or viral vector comprising the RNA genome of (56) above.
- a composition comprising the minus-strand RNA virus or viral vector of (57) or (58) above.
- (61) A gene expression vector comprising the DNA of (60) above operably linked to a control sequence.
- a gene expression vector for the RNA genome, comprising a regulatory sequence (preferably a promoter sequence), a first DNA and a second DNA in that order, the first DNA encodes the RNA genome of an RNA virus;
- the second DNA encodes a protein kinase R (PKR) inhibitory factor (e.g., a PKR inhibitory viral factor (preferably VAI RNA, EBER, nc886, and TAR, and orthologs thereof)).
- PPKR protein kinase R
- a gene expression vector that is transcribed into the RNA of (72) The gene expression vector of (71) above, wherein the protein kinase R (PKR) inhibitory factor is VAI. (73) The gene expression vector according to (71) above, further comprising a self-cleaving ribozyme sequence between the first DNA and the second DNA. (74) The gene expression vector of (72) above, further comprising a self-cleaving ribozyme sequence between the first DNA and the second DNA.
- VAI RNA is part of SEQ ID NOS: 19, 20, and 23-26 and may have a sequence comprising the nucleotide sequence set forth in SEQ ID NO: 17. .
- VAI RNA wherein the VAI RNA is part of SEQ ID NOS: 19, 20, and 23-26 and corresponds to a sequence comprising the nucleotide sequence set forth in SEQ ID NO: 17; and
- VAI Any of the above inventions having a sequence that includes either or both of the 5' and 3' sequences of RNA.
- FIG. 1A is the secondary structure of VAI RNA.
- the 74th base is indicated by an arrow.
- FIG. 1B is a sequence containing VAI RNA and its mutated sequence.
- FIG. 2 shows the results of experiments confirming the reconstitution efficiency of minus-strand RNA viral vectors produced in the presence or absence of VAI.
- FIG. 3 shows the results of an experiment confirming the infectious titer of the minus-strand RNA viral vector produced in FIG.
- FIG. 4 shows the results of experiments confirming the reconstitution efficiency of minus-strand RNA viral vectors produced in the presence or absence of nc886.
- FIG. 5 shows the results of experiments confirming the reconstitution efficiency of minus-strand RNA viral vectors produced in the presence or absence of PKR-inhibiting viral factors.
- FIG. 1B is a sequence containing VAI RNA and its mutated sequence.
- FIG. 2 shows the results of experiments confirming the reconstitution efficiency of minus-strand RNA viral vectors produced in the
- FIG. 6 shows the results of an experiment confirming the infectious titer of the minus-strand RNA viral vector produced in FIG.
- FIG. 7 shows the results of experiments confirming the reconstitution efficiency of minus-strand RNA viral vectors produced in the presence or absence of a fusion sequence of a PKR inhibitor.
- FIG. 8 shows the results of an experiment in which expression promoters were compared in LLC-MK2-F cells and the reconstitution efficiency of minus-strand RNA viral vectors produced in the presence or absence of PKR inhibitors was confirmed.
- FIG. 9 shows the results of an experiment in which expression promoters were compared in Vero-F cells and the reconstitution efficiency of minus-strand RNA viral vectors produced in the presence or absence of PKR inhibitors was confirmed.
- FIG. 9 shows the results of an experiment in which expression promoters were compared in Vero-F cells and the reconstitution efficiency of minus-strand RNA viral vectors produced in the presence or absence of PKR inhibitors was confirmed.
- FIG. 10 shows the results of experiments confirming the reconstitution efficiency of minus-strand RNA viral vectors produced in the presence or absence of multiple PKR inhibitors.
- FIG. 11 shows the results of an experiment confirming the infection titer of the minus-strand RNA viral vector produced in FIG.
- FIG. 12 shows the results of an experiment confirming the reconstitution efficiency of negative-strand RNA viral vectors produced with or without a PKR inhibitory factor in the viral genome.
- FIG. 13 shows the results of an experiment confirming the infection titer of the minus-strand RNA viral vector produced in FIG.
- Fig. 14 shows the results of confirming the reconstitution efficiency of a minus-strand RNA viral vector with VAI RNA extended to the 5' and 3' sides.
- FIG. 11 shows the results of an experiment confirming the infection titer of the minus-strand RNA viral vector produced in FIG.
- FIG. 12 shows the results of an experiment confirming the reconstitution efficiency of negative-strand RNA viral vectors produced with or without a
- FIG. 15 shows the effect of introducing a hammerhead ribozyme between the T7 promoter and the DNA encoding the SeV genome and the efficiency of SeV reconstitution using packaging cells that constitutively expressed a PKR inhibitor.
- Figure 16 shows that the introduction of the hammerhead ribozyme between the T7 promoter and the DNA encoding the SeV genome and the introduction of the HDV ribozyme between the DNA encoding the SeV genome and the VAI RNA increased the SeV reconstitution efficiency.
- FIG. 17 shows the results of PCR experiments demonstrating that the HDV ribozyme self-cleavages VAI RNA from the SeV genome.
- FIG. 17 shows the results of PCR experiments demonstrating that the HDV ribozyme self-cleavages VAI RNA from the SeV genome.
- FIG. 18 shows the effect of introducing VAI (330 bp) 74c into the SeV reconstitution plasmid on SeV reconstitution efficiency.
- FIG. 19 shows the effect of introducing VAI (330 bp) 74c into the SeV reconstitution plasmid in combination with E3Y3 on SeV reconstitution efficiency.
- FIG. 20 shows the effect of introducing VAI (330 bp) 74c into the SeV reconstituting plasmid in combination with E3Y3 on SeV infectious titer.
- FIG. 21A shows maps of the pCAG-SeV and pEF1-SeV constructs used in the experiment.
- FIG. 21B shows the reconstitution efficiency of pCAG-SeV and pEF1-SeV.
- FIG. 22 shows the effect of VAI RNA on the reconstitution efficiency of mumps virus (MuV; family Paramyxoviridae, genus Rubulavirus).
- FIG. 23 shows the effect of VAI RNA on the reconstitution efficiency of measles virus (MeV; family Paramyxoviridae, genus Morbillivirus).
- FIG. 24 shows the effect of E3Y3 on the reconstitution efficiency of vesicular stomatitis virus (VSV; family Rhabdoviridae, genus Vesiculovirus).
- Figure 25 shows the reconstitution efficiency of SeV, MeV, MuV using heterologous RNA polymerases.
- Figure 26 shows the efficiency of VSV reconstitution using heterologous RNA polymerases.
- Figure 27A shows a map of the p3vLPNP construct used in the experiment.
- FIG. 27B shows the results of reconstitution of SeV with pCAG-SeV or pEF1-SeV and p
- a "minus-strand RNA viral vector” is a recombinant virus obtained by modifying a virus having a minus-strand RNA genome (that is, a minus-strand RNA virus) for introduction of a target gene.
- Negative-strand RNA viruses include Orthomyxoviridae (orthomyxoviruses such as influenza virus), Paramyxoviridae (paramyxoviruses such as the genus Mobilivirus), Rhabdoviridae (rhabdoviruses such as rabies virus), filo Viridae (filoviruses such as Ebola and Marburg virus), and Bunyaviridae (buniaviruses such as Hantavirus).
- Paramyxoviruses include viruses of the subfamily Orthoparamyxovirinae.
- Viruses of the subfamily Orthoparamyxovirinae include viruses of the genus Respirovirus, such as Sendai virus.
- PPR protein kinase R
- PKR protein kinase R
- EIF2AK2 EIF2AK2 gene in humans.
- PKR contains an N-terminal double-stranded RNA binding domain and a C-terminal kinase domain.
- the kinase domain has an apoptosis-inducing function.
- PKR is activated by dimerization by binding to double-stranded RNA, followed by autophosphorylation.
- Activated PKR phosphorylates the eukaryotic translation initiation factor eIF2 ⁇ . Phosphorylation of eIF2 ⁇ inhibits translation of intracellular mRNA.
- Activated PKR can also induce apoptosis in cells to prevent viral spread.
- Some viruses possess factors that oppose PKR ie, PKR-inhibiting viral factors).
- certain viruses produce decoy RNAs that bind to PKR and prevent its activation.
- Decoy RNAs include adenovirus VAI RNA (e.g., having the sequence set forth in SEQ ID NO: 17), EB virus EBER (e.g., having the sequence set forth in SEQ ID NO: 4), and HIV TAR (e.g., having the sequence having the sequence described in number 5).
- Poliovirus 2A pro eg, having the sequence shown in SEQ ID NO: 6 is known as a molecule that induces degradation of PKR.
- a terminator eg, T7 terminator for T7 polymerase
- a terminator may be ligated to the 3' end of the nucleotide encoding the RNA.
- Factors that mask viral double-stranded RNA to prevent activation of PKR include vaccinia virus E3L (e.g., having the sequence set forth in SEQ ID NO: 7), reovirus ⁇ 3 (e.g., having the sequence set forth in SEQ ID NO: 8). ), herpes simplex virus Us11 (eg, having the sequence set forth in SEQ ID NO:29), and influenza virus NS1 (eg, having the sequence set forth in SEQ ID NO:28).
- Pseudosubstrates include K3L of vaccinia virus (eg, having the sequence set forth in SEQ ID NO: 10) and Tat of HIV (eg, having the sequence set forth in SEQ ID NO: 11).
- Molecules that induce substrate dephosphorylation include ICP34.5 of herpes simplex virus (eg, having the sequence set forth in SEQ ID NO: 12).
- PKR inhibitory viral factors are also occurring.
- nc886 is a non-coding RNA, also referred to as VTRNA2-1, CBL3, and hvg-5. nc886 functions as a direct inhibitor of PKR. nc886 can have, for example, the sequence set forth in SEQ ID NO:13.
- p58 IPK is a protein that is found as a cytoplasmic protein and functions as an inhibitor of PKR. The p58 IPK can be, for example, human p58 IPK , and can have, for example, the sequence of SEQ ID NO:9. These factors can be naturally occurring.
- NS5A is a nonstructural protein possessed by hepatitis C virus (HCV).
- HCV hepatitis C virus
- NS5A is a phosphorylated protein and has been shown to be essential for HCV genome replication.
- NS5A (for example, having the sequence set forth in SEQ ID NO: 15) can inhibit antiviral activity against HCV and brain myocardial virus (Medical Journal of Kobe University, 2003, 64(1/2): 7-15 reference).
- NS5A may be deleted from its C-terminal side (for example, after the 149th amino acid).
- NS5A can be NS5A(1-148), having amino acids 1-148 thereof (eg, having the sequence set forth in SEQ ID NO: 16). These factors can be naturally occurring.
- the VAI RNA can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO: 17, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO: 17 are , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity to the sequence set forth in SEQ ID NO: 17 or (iv) a fragment thereof, and It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR). According to Examples described later, the viral reconstitution rate is improved by inhibiting PKR in packaging cells.
- PKR eg, PKR such as human PKR and monkey PKR
- the PKR to be inhibited is preferably the animal species from which the packaging cells are derived.
- Vero cells are derived from African green monkeys and LLC-MK2 cells are derived from rhesus monkeys. Therefore, it is preferable to inhibit African green monkey and rhesus monkey PKR in these cells, respectively.
- the VAI RNA may have the 5' sequence of the VAI RNA added to its 5' end.
- the VAI RNA may extend 5' to include the 5' flanking region. Sequences added to the 5' end include the sequences at positions 1-84 of SEQ ID NOs: 19, 20, and 23-26, or a portion thereof that is contiguous with VAI RNA.
- VAI RNA may have the nucleotide sequence set forth in SEQ ID NO:34.
- the VAI RNA may have the 3' sequence of the VAI RNA added to its 3' end.
- the VAI RNA may extend 3' to include the 3' flanking region. Sequences added to the 3' end include the sequences of positions 265-330 of SEQ ID NOs: 19, 20, and 23-26, or a portion thereof that is contiguous with VAI RNA.
- VAI RNA may have the nucleotide sequence set forth in SEQ ID NO:35.
- VAI RNA may have the 5' sequence of VAI RNA added to its 5' end and the 3' sequence of VAI RNA added to its 3' end. .
- the VAI RNA may extend 5' and 3' to include a 5' flanking region and a 3' flanking region, respectively. Sequences added to the 5' end include the sequences at positions 1-84 of SEQ ID NOs: 19, 20, and 23-26, or a portion thereof that is contiguous with VAI RNA. Sequences added to the 3' end include the sequences of positions 265-330 of SEQ ID NOs: 19, 20, and 23-26, or a portion thereof that is contiguous with VAI RNA.
- the VAI RNA is part of SEQ ID NOS: 19, 20, and 23-26 and is a sequence corresponding to a sequence comprising the nucleotide sequence set forth in SEQ ID NO: 17, wherein: (i) VAI RNA and (ii) a sequence containing either or both of the 5' and 3' sequences of VAI RNA.
- the VAI RNA may have a sequence that is part of SEQ ID NOS: 19, 20, and 23-26 and includes the nucleotide sequence set forth in SEQ ID NO:17.
- the EBER can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO:4, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO:4 are It can be a nucleic acid consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO: 4 can be a nucleic acid, or (iv) can be a fragment thereof, and It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- the TAR can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO:5, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO:5 are It can be a nucleic acid consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO:5 can be a nucleic acid, or (iv) can be a fragment thereof, and It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- the 2A pro can be a peptide comprising (i) the sequence set forth in SEQ ID NO:6, and (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO:6 , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity with the sequence set forth in SEQ ID NO: 6 or (iv) a fragment thereof, and It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- E3L can be a peptide comprising (i) the sequence set forth in SEQ ID NO:7, and (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO:7 are It can be a peptide consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO:7 may be a peptide, or (iv) a fragment thereof, and It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- ⁇ 3 can be (i) a peptide comprising the sequence set forth in SEQ ID NO:8, and (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO:8 are It can be a peptide consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO:8 may be a peptide, or (iv) a fragment thereof, and It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- the p58 IPK can be a peptide comprising (i) the sequence set forth in SEQ ID NO:9, and (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO:9 , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity to the sequence set forth in SEQ ID NO:9 or (iv) a fragment thereof, and It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- K3L can be a peptide comprising (i) the sequence set forth in SEQ ID NO: 10, and (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO: 10 are It can be a peptide consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO: 10 may be a peptide, or (iv) a fragment thereof, and It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- Tat can be a peptide comprising (i) the sequence set forth in SEQ ID NO: 11, and (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO: 11 are It can be a peptide consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO: 11 may be a peptide, or (iv) a fragment thereof, and It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- ICP34.5 can be a peptide comprising (i) the sequence set forth in SEQ ID NO: 12, (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO: 12 may be a peptide consisting of a deleted, substituted, inserted and/or added sequence, or (iii) a sequence having 90% or more or 95% or more identity with the sequence set forth in SEQ ID NO: 12 or (iv) a fragment thereof, and It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- nc886 can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO: 13, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO: 13 are It can be a nucleic acid consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO: 13 can be a nucleic acid, or (iv) can be a fragment thereof, and It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- nc886 can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO: 14, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO: 14 are It can be a nucleic acid consisting of a deleted, substituted, inserted, and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO: 14 can be a nucleic acid, or (iv) can be a fragment thereof, and It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- the VAI RNA can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO: 18, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO: 18 are , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity to the sequence set forth in SEQ ID NO: 18 or (iv) a fragment thereof, and It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- the VAI RNA can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO: 19, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO: 19 are , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity to the sequence set forth in SEQ ID NO: 19 or (iv) a fragment thereof, and It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- the VAI RNA can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO:20, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO:20 are , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity to the sequence set forth in SEQ ID NO: 20 or (iv) a fragment thereof, and It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- the VAI RNA can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO:21, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO:21 are , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity to the sequence set forth in SEQ ID NO: 21 or (iv) a fragment thereof, and It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- the VAI RNA can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO:22, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO:22 are , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity to the sequence set forth in SEQ ID NO: 22 or (iv) a fragment thereof, and It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- the VAI RNA can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO:23, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO:23 are , deletions, substitutions, insertions, and/or additions, or (iii) a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO: 23. or (iv) a fragment thereof, and It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- the VAI RNA can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO:24, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO:24 are , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity to the sequence set forth in SEQ ID NO: 24 or (iv) a fragment thereof, and It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- the VAI RNA can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO:25, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO:25 are , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity to the sequence set forth in SEQ ID NO: 25 or (iv) a fragment thereof, and It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- the VAI RNA can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO:26, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO:26 are , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity to the sequence set forth in SEQ ID NO: 26 or (iv) a fragment thereof, and It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- NS1 can be a peptide comprising (i) the sequence set forth in SEQ ID NO:28, and (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO:28 are It can be a peptide consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO: 28 may be a peptide, or (iv) a fragment thereof, and It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- Us11 can be a peptide comprising (i) the sequence set forth in SEQ ID NO:29, and (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO:29 are It can be a peptide consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO: 29 may be a peptide, or (iv) a fragment thereof, and It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- E3K3 can be a fusion sequence of part or all of E3L (e.g., the C-terminal 107 amino acid sequence of E3L) and part or all of K3, preferably part of E3L (more preferably , the C-terminal 107 amino acid sequence of E3L) and K3, and may be a peptide having a function of inhibiting PKR (for example, PKR such as human PKR and monkey PKR).
- PKR for example, PKR such as human PKR and monkey PKR.
- E3K3 can be a peptide comprising (i) the sequence set forth in SEQ ID NO:30, and (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO:30 are It can be a peptide consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO: 30 may be a peptide, or (iv) a fragment thereof, and It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- E3Y3 can be a fusion sequence of part or all of E3L (e.g., the C-terminal 107 amino acid sequence of E3L) and part or all of Y3, preferably part of E3L (more preferably , the C-terminal 107 amino acid sequence of E3L) and Y3, and may be a peptide having a function of inhibiting PKR (for example, PKR such as human PKR and monkey PKR).
- PKR for example, PKR such as human PKR and monkey PKR
- E3Y3 can be a peptide comprising (i) the sequence set forth in SEQ ID NO:31, and (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO:31 are It can be a peptide consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO: 31 may be a peptide, or (iv) a fragment thereof, and It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
- PKR eg, PKR such as human PKR and monkey PKR
- packaging cells are cells that produce viral vectors.
- the viral genome of a viral vector performs one or more functions selected from the group consisting of propagation, replication, and spread (including infection of other cells).
- the factor has been destroyed and engineered so that it cannot proliferate, replicate, or spread after cell infection.
- the packaging cell complements the disrupted viral factors to produce the viral vector and expresses a portion of the disrupted viral factors to restore viral production.
- Packaging cells may stably or transiently harbor such factors in their genome.
- a Sendai virus vector is classically obtained by producing a Sendai virus whose genome lacks the F gene, using packaging cells that supply the F gene.
- the supplied F gene is activated in the presence of trypsin, but a type of F gene (F5R) that is activated by furin, which is ubiquitously present in cells, has also been developed, increasing the convenience of virus production. (see for example WO2005/071085A).
- F5R type of F gene
- vectors have been constructed using Z strains, which are attenuated strains, as a basic skeleton, and have been devised to further enhance safety for medical application to humans.
- Z strains which are attenuated strains, as a basic skeleton
- techniques have been developed to delete any one or more of the F, HN, and M genes from the viral genome to render the virus non-transmissible.
- an F gene-deleted viral genome is preferably used.
- the viral genome is operably linked to regulatory sequences (eg, the T7 promoter) that can drive production of the viral genome. This allows the Sendai virus genome to be produced in the packaging cells from the cDNA.
- T7 RNA polymerase can be supplied, for example, by a helper virus such as vaccinia virus. expressing in the packaging cells N, P, F, and L operably linked to regulatory sequences that drive transcription by an RNA polymerase (e.g., pol II), thereby supplying viral particle components; Viral particles can be formed within the packaging cells.
- a helper virus such as vaccinia virus.
- RNA polymerase e.g., pol II
- Viral particles can be formed within the packaging cells.
- LLC-MK2 cells derived from monkey kidney are used as packaging cells. This results in viral particles that can infect cells once, but cannot subsequently spread to other cells. Virus particles can be used after concentration and/or purification, if desired.
- the virus' own regulatory sequences are optionally introduced to allow transcription by an RNA-dependent RNA polymerase.
- Negative-strand RNA viruses include Orthomyxoviridae (orthomyxoviruses such as influenza virus), Paramyxoviridae (paramyxoviruses such as the genus Mobilivirus), Rhabdoviridae (rhabdoviruses such as rabies virus), filo Viridae (filoviruses such as Ebola and Marburg virus), and Bunyaviridae (buniaviruses such as Hantavirus).
- the minus-strand RNA virus is preferably a Paramyxoviridae virus, preferably a Paramyxoviridae, and preferably a Sendai virus.
- regulatory sequence refers to a sequence that has the activity of driving a gene operably linked thereto and transcribing RNA from the gene.
- a control sequence is, for example, a promoter.
- Promoters include, for example, class I promoters (which can be used for transcription of rRNA precursors), class II promoters (which are composed of a core promoter and an upstream promoter element and can be used for transcription of mRNAs), and class III promoters (which can be used for transcription of mRNA). , II, and III).
- a minus-strand RNA viral vector has a disrupted (e.g., deleted) factor on its genome that is related to proliferation or infection of a minus-strand RNA virus into cells, and proliferation in cells other than packaging cells. or has reduced or no substantial infectivity.
- such vectors are rendered initially infective in cells by making them under conditions that supply the packaging cells with factors for disrupted growth or infection. This ensures that vectors obtained from packaging cells are infective, but vectors that subsequently infect cells other than packaging cells are unable to produce more infectious particles, thereby resulting in vector safety has been improved.
- the method of the present invention comprises: (A) expressing from a gene encoding a protein kinase R (PKR) inhibitory factor operably linked to a first regulatory sequence and supplying the factor to the packaging cell;
- PPK protein kinase R
- the first regulatory sequence can be a promoter that can transcribe RNA, for example, mRNA, and for example, various pol II promoters can be used.
- the pol II promoter is not particularly limited, but includes, for example, CMV promoter, EF1 promoter (EF1 ⁇ promoter), SV40 promoter, MSCV promoter, hTERT promoter, ⁇ actin promoter, CAG promoter, and CBh promoter.
- Promoters capable of transcription of RNA also include promoters that drive bacteriophage-derived RNA polymerase, such as T7 promoter, T3 promoter, and SP6 promoter, and pol III promoters, such as U6 promoter.
- a promoter may also be an inducible promoter. These promoters can be preferably used for transcription of RNA factors.
- An inducible promoter is a promoter that can induce expression of a polynucleotide operably linked to it only in the presence of an inducer driving the promoter.
- Inducible promoters include promoters that induce gene expression by heating, such as heat shock promoters.
- Inducible promoters also include promoters in which the inducer that drives the promoter is a drug.
- Such drug-inducible promoters include, for example, Cumate operator sequences, ⁇ operator sequences (eg, 12 ⁇ Op), tetracycline system-inducible promoters, and the like.
- Tetracycline-based inducible promoters include, for example, promoters that drive gene expression in the presence of tetracycline or its derivatives (eg, doxycycline), or reverse tetracycline-regulated transactivator (rtTA). Examples of tetracycline-inducible promoters include the TRE3G promoter.
- Certain viruses are equipped with PKR-inhibiting viral factors to combat PKR.
- a PKR-inhibiting viral factor naturally possessed by such viruses can be used as the PKR-inhibiting viral factor. Therefore, the species from which the viral genome and the PKR-inhibiting viral factor are derived may be homologous, but preferably heterologous.
- Protein kinase R (PKR) inhibitory factors include, for example, decoy RNA that binds to PKR.
- Decoy RNAs include, for example, VAI RNA, EBER, nc886, and TAR, and orthologues thereof.
- the decoy RNA can be VAI RNA and its orthologues, particularly from adenovirus.
- the decoy RNA may be EBER and its orthologues, particularly from Epstein-Barr (EB) virus.
- the decoy RNA may be nc886 and its orthologues, particularly of human origin.
- the decoy RNA may be TAR and its orthologues, particularly derived from human immunodeficiency virus (HIV). These factors can be preferably used in the present invention.
- VAI one having the sequence set forth in SEQ ID NO: 17 can be used.
- the VAI may further comprise its preceding and following sequences on the adenoviral genome.
- a PKR-inhibiting viral agent may have the sequence set forth in SEQ ID NO:19.
- VAI may further include VAII.
- the PKR-inhibiting viral agent may have the sequence set forth in SEQ ID NO:21.
- VAI may have one or more mutations selected from the group consisting of substitutions, deletions, insertions and additions.
- a PKR-inhibiting viral agent can have a sequence with a substitution at base 74 of VAI corresponding to base 74 in the sequence set forth in SEQ ID NO:17.
- Substitution of the 74th base in the sequence shown in SEQ ID NO: 17 may be any one of G, A and C, preferably C.
- the PKR-inhibiting viral agent may have a sequence set forth in SEQ ID NO:18 or 20.
- the PKR-inhibiting viral agent may have a sequence set forth in SEQ ID NO:22 or 23.
- a PKR-inhibiting viral factor may have a sequence having a substitution at the VAI base corresponding to the 191st base in the sequence set forth in SEQ ID NO:19.
- the PKR-inhibiting viral agent may have the sequence set forth in SEQ ID NO:24.
- the PKR-inhibiting viral agent may have the sequence set forth in SEQ ID NO:25.
- the PKR-inhibiting viral agent may have the sequence set forth in SEQ ID NO:26.
- nc886 may have the sequence of SEQ ID NO: 13 in certain aspects. nc886 may further comprise sequences before and after VAI. nc886 may further have sequences before and after VAI and have the sequence set forth in SEQ ID NO:14.
- Protein kinase R (PKR) inhibitory agents also include molecules that induce the degradation of PKR.
- Molecules that induce degradation of PKR include, for example, 2A pro and its orthologues.
- the molecule that induces degradation of PKR can be 2A pro and its orthologues, particularly from poliovirus. These factors can be preferably used in the present invention.
- Protein kinase R (PKR) inhibitory factors also include factors that mask viral double-stranded RNA.
- Agents that mask viral double-stranded RNA can mask viral double-stranded RNA to prevent activation of PKR.
- Factors that mask viral double-stranded RNA include, for example, E3L, ⁇ 3, Us11 and NS1 and their orthologues.
- the factor that masks viral double-stranded RNA can be E3L and its orthologs, particularly from vaccinia virus. In certain preferred embodiments, it may be ⁇ 3 and its orthologues, particularly from reoviruses. In certain preferred embodiments, it may be Us11 and its orthologs, particularly from herpes simplex virus (HSV).
- the viral double-stranded RNA masking agent can be NS1 and its orthologs, particularly from influenza virus. These factors can be preferably used in the present invention.
- Protein kinase R (PKR) inhibitory agents also include agents that inhibit PKR dimerization.
- Factors that inhibit PKR dimerization include, for example, p58 IPK and NS5A and their orthologs.
- the agent that inhibits PKR dimerization can be p58 IPK and its orthologues, particularly of human origin.
- the agent that inhibits PKR dimerization can be NS5A and its orthologs, particularly from hepatitis C virus (HCV). These factors can be preferably used in the present invention.
- NS5A may be deleted from its C-terminal side (for example, after the 149th amino acid).
- NS5A can be NS5A(1-148) with amino acids 1-148 thereof.
- Pseudosubstrates include, for example, K3L and Tat and their orthologues.
- the pseudosubstrate can be K3L and its orthologues, particularly from vaccinia virus.
- the pseudosubstrate is Tat and its orthologues, particularly from HIV. These factors can be preferably used in the present invention.
- Protein kinase R (PKR) inhibitory factors also include molecules that induce substrate dephosphorylation.
- Molecules that induce substrate dephosphorylation include, for example, ICP34.5 and its orthologues.
- the molecule that induces substrate dephosphorylation is ICP34.5 and its orthologs are derived from herpes simplex virus (HSV). These factors can be preferably used in the present invention.
- HSV herpes simplex virus
- the protein kinase R (PKR) inhibitory agent is adenovirus VAI RNA, EB virus EBER, human nc886, HIV virus TAR, poliovirus 2A pro , vaccinia virus E3L, reovirus ⁇ 3 , influenza virus NS1, human p58 IPK , hepatitis C virus NS5A, vaccinia virus K3L, HIV virus Tat, herpes simplex virus Us11, and herpes simplex virus ICP34.5, and orthologs thereof.
- PTR protein kinase R
- the protein kinase R (PKR) inhibitory factor may, in some embodiments, be stably integrated into the genome of the packaging cell. Expression can be driven by a first control sequence.
- the first regulatory sequence can be a constitutive promoter or an inducible promoter.
- a protein kinase R (PKR) inhibitory agent may, in certain embodiments, be transiently introduced into packaging cells.
- protein kinase R (PKR) inhibitory agents can be carried on plasmid DNA. Plasmid DNA can be introduced into cells using techniques well known to those of skill in the art, thereby allowing protein kinase R (PKR) inhibitory factors to be expressed intracellularly from the plasmid DNA. Expression can be driven by a first control sequence.
- the first regulatory sequence can be a constitutive promoter or an inducible promoter.
- packaging cells can be, for example, Vero cells or LLC-MK2 cells.
- the packaging cells can be a cell population consisting of Vero cells or a cell population consisting of LLC-MK2 cells.
- no cells other than packaging cells are used for virus production.
- the packaging cell expresses the F gene.
- the packaging cells constitutively express the F gene.
- the F protein can be activated with trypsin.
- the F protein can be F5R.
- compositions for reconstitution of SeV are provided comprising Vero cells or LLC-MK2 cells. Reconstitution refers to supplying virus or viral vector components to packaging cells to form the virus or viral vector. Reconstitution of SeV can be performed as described herein.
- a method for producing a minus-strand RNA virus or a minus-strand RNA viral vector comprising: (B) expressing the genomic RNA of a minus-strand RNA virus or viral vector in packaging cells to form a minus-strand RNA virus or viral vector in the presence of the factor ⁇ e.g., a PKR inhibitory factor, e.g., expressing the genomic RNA of a negative-strand RNA virus or negative-strand RNA viral vector in packaging cells in the presence of a PKR-inhibiting viral agent to form a negative-strand RNA virus or negative-strand RNA viral vector ⁇
- the factor e.g., a PKR inhibitory factor, e.g., expressing the genomic RNA of a negative-strand RNA virus or negative-strand RNA viral vector in packaging cells in the presence of a PKR-inhibiting viral agent to form a negative-strand RNA virus or negative-strand RNA viral vector ⁇
- a method is provided comprising:
- the genomic RNA of a negative-strand RNA virus or negative-strand RNA viral vector can be expressed, for example, from a gene expression vector having DNA encoding the genomic RNA operably linked to a second regulatory sequence.
- a gene expression vector can be used, for example, as long as it is a vector that at least transiently expresses the genomic RNA in cells, and a preferred example is a plasmid vector.
- the genomic RNA contains 511F for the P protein, 69E, 116A and 183S for the M protein, 262T, 264R and 461E for the HN protein, and 1197S and 1796E for the L protein to minimize vector cytotoxicity. It may have mutations (see, for example, WO2003/025570).
- virus particle components e.g., F, N, P, L
- virus particle components e.g., F, N, P, L
- PTR protein kinase R
- NS5A protein kinase R
- nc886 protein kinase R
- Packaged cells can be cultured under conditions suitable for culture.
- the gene encoding the viral genome can be driven by the T7 promoter.
- the packaging cells can be supplied with T7 polymerase.
- Genes encoding the viral genome may be driven by the CAG promoter or the EF1 promoter.
- the packaging cells can be further supplied with SeV components (eg, N, P, and L, and equivalents thereof) to facilitate SeV formation in the packaging cells.
- SeV components eg, N, P, and L, and equivalents thereof
- the SeV components can be supplied, for example, by introducing a plasmid vector into the packaging cells.
- the genes encoding the viral particle components are each operably linked to a third regulatory sequence.
- the genes encoding the viral particle components (eg, F, N, P, L) each operably linked to a third regulatory sequence are integrated on a plasmid.
- the third regulatory sequence can be a CAG promoter (eg, having the sequence set forth in SEQ ID NO:2).
- at least one or all of the third regulatory sequences can be a non-CAG promoter, such as the EF1 ⁇ promoter (eg, having the sequence set forth in SEQ ID NO:1).
- the genes encoding the viral particle components are carried on one or more gene expression vectors (preferably plasmids).
- these components may be operatively linked to one control sequence or to multiple control sequences.
- a control sequence can be, for example, the CAG or EF1 promoter.
- the method for producing a negative-strand RNA virus or negative-strand RNA viral vector comprises: (C) further comprising recovering the formed negative-strand RNA virus or negative-strand RNA viral vector.
- Virus particles formed in cells can be collected as appropriate. Viral particles formed intracellularly can be released extracellularly. Therefore, virus particles can be recovered from the culture medium. The recovered virus particles can be purified and/or concentrated as appropriate. Thus, an isolated, purified, or concentrated viral vector is provided. The resulting viral vector can be stored as appropriate. Storage can be performed, for example, in a deep freezer (eg, about -80°C), in a freezer (eg, about -20°C), or in a refrigerator (about 4°C). Storage can also be performed in liquid nitrogen. The viral vector is subjected to titer determination as necessary. Viral titers can be determined by methods well known to those skilled in the art.
- the infectious titer of the minus-strand RNA virus or minus-strand RNA viral vector obtained by the method of the present invention is 1 ⁇ 10 5 CIU/mL or more, 2 ⁇ 10 5 CIU/mL or more, or 3 ⁇ 10 5 CIU.
- the relationship between the species from which the virus or viral vector is derived and the species from which the PKR inhibitory factor is derived may be heterologous.
- the species relationship from which the first regulatory sequence and the PKR inhibitory factor are derived may be homologous.
- the relationship between the species from which the first regulatory sequence and the PKR inhibitory factor are derived may be heterologous.
- the relationship between the species from which the virus or viral vector is derived and the species from which the PKR inhibitory factor is derived can be homogeneous.
- the relationship between the species from which the virus or viral vector is derived and the species from which the PKR-inhibitory factor is derived is heterologous, and the first regulatory sequence and the PKR-inhibitory factor are derived from Species relationships can be heterogeneous.
- the gene encoding the PKR inhibitory factor is integrated into the genome of the packaging cell.
- the gene encoding the PKR inhibitory factor is incorporated into a vector (eg, plasmid DNA) that is introduced into packaging cells.
- the position of integration is before the N gene, between the N gene and the P gene, between the P gene and the M gene, between the M gene and the HN gene, between the HN gene and the L gene, or between the L gene on the SeV genome. can be behind.
- the location of integration may be in the 3'UTR of the gene encoding the protein of interest when the factor is RNA.
- the N gene is sometimes written as the NP gene.
- a gene encoding a PKR inhibitory factor is integrated into the RNA genome of a minus-strand RNA virus or minus-strand RNA viral vector.
- the gene encoding the PKR inhibitory factor may be further integrated into the genome of the packaging cell or into a vector (eg, plasmid DNA) introduced into the packaging cell.
- a gene encoding a PKR-inhibitory factor is integrated into the RNA genome of a negative-strand RNA virus or negative-strand RNA viral vector and introduced into the genome of or into the packaging cell.
- a vector eg, plasmid DNA
- the PKR inhibitory factor is supplied from the packaging cell even when the number of genomes is small, and the PKR inhibitory factor is supplied from the genome when the genome is increased.
- Stranded RNA viral vectors can be successfully propagated.
- the PKR inhibitory factor is supplied from the viral genome, and the virus or viral vector is successfully transferred to the cell. can grow within As a result, for example, the effect of increasing the expression level of the target gene mounted on the virus or viral vector can be obtained.
- virus particles are produced in the absence of helper virus.
- the virus or viral vector is a paramyxovirus or a paramyxovirus vector
- the RNA genome is an F gene-deficient RNA genome.
- the first regulatory sequence can be the CAG promoter or the EF1 promoter, such as the EF1 promoter.
- the second regulatory sequence is the T7 promoter, and the T7 RNA polymerase can be produced by transcription and translation from the cell genome or plasmid.
- the Paramyxovirus is Sendai virus.
- the Paramyxovirus vector is a Sendai virus vector.
- the Paramyxovirus or Paramyxovirus vector is capable of expressing the N, P, and L proteins. In some aspects, the Paramyxovirus or Paramyxovirus vector does not express one, two, or three selected from the group consisting of the F, HN, and M proteins.
- the RNA genome lacks RNAs encoding 1, 2, or 3 proteins selected from the group consisting of F, HN, and M proteins. In one preferred embodiment, the Paramyxovirus or Paramyxovirus vector does not express the F protein.
- the Paramyxovirus or Paramyxovirus vector has an RNA genome capable of expressing V protein and/or C protein.
- an RNA genome of a minus-strand RNA virus or a minus-strand RNA virus vector and a DNA encoding the RNA genome are provided.
- the RNA genome in one aspect, expressably comprises genes encoding any one or more of the PKR-inhibiting factors (eg, PKR-inhibiting viral factors).
- the present invention also provides a minus-strand RNA viral vector comprising the above RNA genome.
- a negative-strand RNA virus or negative-strand RNA viral vector further has a viral particle that contains the RNA genome.
- viruses or viral vectors can exhibit stronger growth potential after cell infection.
- the minus-strand RNA virus is Paramyxovirus, more preferably Sendai virus.
- the minus-strand RNA viral vector is a Paramyxovirus vector, more preferably a Sendai virus vector.
- the DNA encoding the RNA genome is operably linked to a second regulatory sequence.
- a gene expression vector is provided comprising DNA encoding the RNA genome operably linked to a second regulatory sequence.
- an RNA genome (especially a SeV genome) comprising DNA encoding said genomic gene expression vector is flanked either or both upstream and downstream of said RNA genome by a self-cleaving ribozyme (e.g. a hammer head ribozyme or HDV ribozyme).
- the gene expression vector may contain sequences of other factors (e.g., PKR-inhibiting factors and factors that promote RNA amplification) via the sequence of the self-cleaving ribozyme (e.g., hammerhead ribozyme or HDV ribozyme). may be ligated so that the RNA genome and the sequences of said other factors are transcribed into a series of RNAs.
- RNA By constructing in this way, after the RNA genome is transcribed, the RNA can be cleaved at the sequence of a self-cleaving ribozyme (e.g., hammerhead ribozyme or HDV ribozyme) to remove said other factor, RNA is obtained which consists essentially of the genome.
- a self-cleaving ribozyme e.g., hammerhead ribozyme or HDV ribozyme
- RNA is obtained which consists essentially of the genome.
- a self-cleaving ribozyme e.g., hammerhead ribozyme or HDV ribozyme
- the other factor can be placed 5' to the RNA genome, and a hammerhead ribozyme sequence can be placed between the other factor and the region encoding the RNA genome, or is located 3' of the RNA genome, and the sequence of the HDV ribozyme can be placed between the region encoding the RNA genome and the other elements mentioned above.
- the gene expression vector comprising DNA encoding the RNA genome includes, for example, a promoter (eg, T7 promoter, CAG promoter, and EF1 promoter), a first self-cleaving ribozyme (eg, 3' the sequence of a self-cleaving ribozyme, preferably a hammerhead ribozyme), the DNA encoding the RNA genome, the sequence of a second self-cleaving ribozyme (e.g., a 5' self-cleaving ribozyme, preferably an HDV ribozyme), and others. may be configured to include an array of factors in this order.
- a promoter eg, T7 promoter, CAG promoter, and EF1 promoter
- a first self-cleaving ribozyme eg, 3' the sequence of a self-cleaving ribozyme, preferably a hammerhead ribozyme
- the DNA encoding the RNA genome
- promoters e.g., T7 promoter, CAG promoter, EF1 promoter, etc.
- sequences of other factors e.g., first self-cleaving ribozymes (e.g., 3′ self-cleaving ribozymes, preferably hammer head ribozyme), DNA encoding the RNA genome, and the sequence of a second self-cleaving ribozyme (e.g., 5' self-cleaving ribozyme, preferably HDV ribozyme) in this order.
- the self-cleaving ribozyme is shown above only as an example, and preferred embodiments are not limited to this.
- the self-cleaving ribozyme when used, can be arranged so that the RNA genome has 6n bases (where n is a natural number).
- the gene expression vector may, for example, further include a terminator sequence (eg, a T7 terminator sequence for T7 polymerase) downstream of the sequence of the other factor.
- a terminator sequence eg, a T7 terminator sequence for T7 polymerase
- sequences of self-cleaving ribozymes eg, hammerhead ribozymes
- self-cleaving ribozymes examples include, but are not limited to, hammerhead ribozymes, hepatitis delta virus (HDV) ribozymes, twister ribozymes, twister-sister ribozymes, pistol ribozymes, hairpin ribozymes, and hatchet ribozymes. be done.
- These self-cleaving ribozymes can be, for example, 5' self-cleaving ribozymes and/or 3' self-cleaving ribozymes.
- Hh-Rbz eg, SEQ ID NO: 36
- HDV-Rbz hepatitis delta virus ribozyme
- a gene expression vector that expresses an RNA virus component may further carry a PKR-inhibitory factor or an RNA amplification-promoting factor.
- Said gene expression vector provides said component via the sequence of said self-cleaving ribozyme (e.g., as described above, which can be, for example, a hammerhead ribozyme or HDV ribozyme) via the sequence of another factor (e.g., A PKR-inhibiting factor or factor that promotes amplification of RNA) may be ligated so that the RNA genome and the sequence of the other factor are transcribed into a sequence of RNA.
- the PKR inhibitory factor and/or the factor promoting RNA amplification may be carried independently on a plasmid.
- a combination of a gene expression vector for the genome, which contains DNA encoding the RNA genome of the virus, and a vector for reconstitution of the virus, which contains DNAs which encode the components of the virus. be done.
- the combination can be used to reconstitute the viral particles in the cell by co-expression in the cell.
- a combination is provided for use in reconstituting a viral particle, the combination comprising DNA encoding the RNA genome of the virus and DNA encoding the components of the virus, the DNA comprising , which contains DNA encoding sufficient factors to form viral particles and is carried in one or more gene expression vectors.
- the RNA genome and DNA encoding the viral components are operably linked to regulatory sequences.
- a regulatory sequence can be a promoter, such as, but not limited to, the T7 promoter, the CAG promoter, and the EF1 promoter.
- a Sendai virus or Sendai virus vector may further have a target gene in its RNA genome.
- a gene of interest can be a gene that one wishes to introduce into a cell.
- the gene of interest can be expressed in the introduced cells to produce RNA or protein.
- the gene of interest is expressably carried in the RNA genome.
- a gene of interest can be a foreign gene.
- a foreign gene is a term used to distinguish it from a gene endogenous to the cell into which it is introduced.
- Minus-strand RNA viral vectors were expressed in virus packaging cells. Specifically, the efficacy of PKR inhibitors upon expression was evaluated.
- Sendai virus was used as a negative-strand RNA virus vector.
- Sendai virus was collected from the culture supernatant 3 days after introduction of the plasmid mixture into the F gene-expressing cells.
- the plasmid mixture contained pSeV-EmGFP carrying the Sendai virus genome operably linked to a T7 promoter.
- the Sendai virus genome contained a gene encoding EmGFP so that the proliferation of the genome could be detected by fluorescence.
- the Sendai virus genome was assumed to have a deletion of the F gene.
- F gene-expressing cells were prepared as follows.
- the SeV F gene (Kozak sequence added, optimized for human codons) was loaded into pCAGGS-neo to construct pCAGGS-F-neo.
- the resulting plasmid was transfected into Vero cells or LLC-MK2 cells using ViaFect (Promega), and selected using 1-2 mg/mL G418 disulfate solution (Nacalai Tesque) to express F gene. cells were obtained. The resulting cells are designated as Vero-F and LLC-MK2-F.
- F gene-deleted SeV was produced as follows. ACCESSION: The sequence information of the SeV-Z strain of AB855655 and the J. Phys. General Virology (1997), 78, 2813-2820. pSeV/dF, in which the F gene-deleted SeV genome is transcribed with a T7 promoter, was constructed based on the information of pSeV.
- pSeV/dF P protein: 511F
- the resulting plasmid was named pSeV/TSdF.
- EmGFP which is a GFP mutant, was used as a gene of interest (GOI) to evaluate SeV rearrangement.
- the GOI is installed in front of the N gene (hereinafter referred to as "+”), between the P gene and the M gene (hereinafter referred to as “PM”), and between the M gene and the HN gene (hereinafter referred to as “MHN”). ) and between the HN gene and the L gene (hereinafter referred to as “HNL”).
- the EmGFP gene was placed in front of the SeV N gene, and pSeV+EmGFP/TSdF was mainly used.
- a plasmid for SeV reconstitution was constructed as follows. pCAGGS-NP, pCAGGS-P4C(-), pCAGGS-L, pCAGGS-F5R and pCAGGS-T7 were constructed with reference to WO2005/071092, and this combination is referred to as "CAG".
- a reconstruction plasmid set with a Kozak sequence added and optimized for human codons and having a promoter different from the above: pCAGGS-NPco, pCAGGS-P4C (-) co, pCAGGS-Lco, pCAGGS-F5Rco, pCAGGS- T7co, pEF1-NPco, pEF1-P4C(-)co, pEF1-Lco, pEF1-F5Rco, and pEF1-T7co were constructed.
- CAGnpEFL A combination of pCAGGS-NPco, pCAGGS-P4C(-)co, pEF1-Lco, pCAGGS-F5Rco and pCAGGS-T7mco is denoted as CAGnpEFL.
- a plasmid having a PKR inhibitor was constructed as follows.
- a sequence having base substitutions (T74A, T74C) at the 74th base of VAI was constructed.
- a pT7 plasmid was constructed carrying nc886 (108 bp) as another PKR inhibitor.
- nc886 (272 bp) having VAI sequences before and after each was constructed (SEQ ID NOS: 13, 14).
- pT7-IRES having an IRES sequence under the T7 promoter was constructed.
- a plasmid having a PKR inhibitor was constructed as follows.
- the translated sequences were basically added with Kozak sequences and optimized for human codons.
- pCAGGS-E3L, pCAGGS-K3L, pCAGGS-Y3, pCAGGS-E3K3, pCAGGS-E3Y3, pCAGGS-NS1, pCAGGS- ⁇ 3, pCAGGS-Us11 were constructed.
- E3L (SEQ ID NO: 7) and K3L (SEQ ID NO: 10) are vaccinia virus sequences
- Y3 (SEQ ID NO: 27) is the C-terminal 106 amino acid sequence of SeV C protein
- NS1 (SEQ ID NO: 28) is the influenza virus sequence
- ⁇ 3 (SEQ ID NO: 8) is a reovirus sequence
- Us11 (SEQ ID NO: 29) is an HSV-1 sequence
- E3K3 (SEQ ID NO: 30) is a fusion sequence between the C-terminal 107 amino acid sequence of E3L and K3L
- E3Y3 (SEQ ID NO: 31) was a fusion sequence between the C-terminal 107 amino acid sequence of E3L and Y3.
- SeV Reconstitution in the Presence or Absence of a PKR Inhibitor The ratio of SeV reconstitution plasmid to transfection reagent was in accordance with WO2005/071092. Specifically, plasmids and transfection reagents (TransIT-LT1 Reagent or ViaFect) of the following weights were mixed to obtain a plasmid mix.
- PKR inhibitors NP, P4C (-), F5R, T7: 0.5 ⁇ g each L: 2 ⁇ g pSeV: 5 ⁇ g Plasmid with PKR inhibitor: 1 ⁇ g Total plasmid: 10 ⁇ g TransIT-LT1 Reagent or ViaFect: 16.5 ⁇ L
- the weight of the plasmid and the volume of the transfection reagent were mixed at a ratio of 9:15.
- a plasmid and a transfection reagent were mixed in 225 ⁇ L of OptiMEM, transfected into F gene-expressing cells in a 12-well plate being cultured in 500 ⁇ L of medium (10% FBS/E-MEM), and cultured at 37°C. The cells were cultured at 32° C. from the day after transfection. Medium changes were performed daily with serum-free medium (ITS-X/NEAA/E-MEM) supplemented with 2.5 ⁇ g/mL trypsin. As an indicator of successful SeV reconstitution, EmGFP-positive cells were observed from the day after transfection (an increase in the number of EmGFP-positive cells indicates an improvement in SeV reconstitution efficiency).
- the fluorescence intensity of the microplate was measured using the system ECLIPSE Ti2-E (Nikon).
- the culture supernatant on day 3 of transfection was collected, diluted 10 to 100,000 times, infected with Vero cells seeded in a 96-well plate, and the number of GFP-positive cells was counted 3 days after infection using ECLIPSE Ti2-E.
- the infection titer was calculated.
- SeV Reconstitution in the Presence of VAI A cell population containing only LLC-MK2-F was used as SeV reconstitution cells. CAGnpEFL was used as a plasmid for SeV reconstruction. pSeV used pSeV+EmGFP/TSdF. VAI was used as a PKR inhibitor. VAI uses pT7-VAI (180 bp) and pT7-VAI-VAII (478 bp) as wild-type (wt) sequences, and pT7-VAI74a (180 bp), pT7-VAI74c (180 bp) and pT7-VAI74a ( 330 bp) was used.
- pT7-IRES was used as a control (Ctrl) plasmid for VAI.
- EmGFP fluorescence-positive cells were observed from the day after transfection. Comparing the fluorescence intensity from EmGFP from day 3 cells, 18-fold over control in the presence of VAI (180 bp) wt, 34-fold over control in the presence of VAI (180 bp) 74a, and 34-fold over control in the presence of VAI (180 bp) 74c It was 53-fold that of the control, 63-fold that of the control in the presence of VAI-VAII, and 146-fold that of the control in the presence of VAI (330 bp)74a.
- the recovery efficiency of the SeV vector is very low in LLC-MK2, and even when the recovered cells were inoculated into chicken eggs, the HA activity of SeV could not be confirmed in LLC-MK2-derived cells.
- SeV reconstitution using 293T cells showed an infection titer of about 10 2 CIU/mL using the culture supernatant 3 days after reconstitution (Beaty, SM. et al., mSphere. 2, e00376-16 (2017)). On the other hand, in this example, 2 ⁇ 10 7 CIU/mL was achieved 3 days after reconstitution, indicating a marked increase in the infectious titer.
- SeV Reconstitution in the Presence of nc886 A cell population containing only LLC-MK2-F was used as SeV reconstitution cells. CAGnpEFL was used as a plasmid for SeV reconstruction. pSeV used pSeV+EmGFP/TSdF. As plasmids containing PKR inhibitors, pT7-nc886 (108 bp), pT7-nc886 (272 bp) and pT7-VAI74a (330 bp) were used.
- EmGFP-derived fluorescence intensity from cells increased in all test groups compared to controls.
- LLC-MK2-F cells improved the SeV reconstitution efficiency by 100-fold or more
- VERO-F cells improved the SeV reconstitution efficiency by 10-fold or more in VAI, E3L, ⁇ 3, and Us11 (Fig. 5).
- infection titers were elevated in all test groups compared to controls. In titration, it was VAI, E3L, ⁇ 3, and Us11 that showed high values in both LLC-MK2-F and Vero-F cells (Fig. 6).
- EmGFP-derived fluorescence intensity from cells increased in all test groups compared to the control.
- E3Y3 also improved the SeV reconstruction efficiency compared to E3K3 (Fig. 7).
- E3Y3 was 3.5 times higher than E3L in LLC-MK2-F cells, and Vero-F was 3.5 times higher than E3L. A 6.8-fold improvement was observed for E3Y3 over E3L in cells.
- Vero-F cells were transfected with pCAGGS-E3L-Hyg or pCAGGS-E3Y3-Hyg, and 500 ⁇ g/mL hygromycin B (Nacalai Cells were selected using Tesk) to obtain Vero-F-E3L and Vero-F-E3Y3 cells, stable lines that constitutively express E3L and E3Y3, respectively.
- SeV reconstitution plasmids pEF1-NPco, pEF1-P4C(-)co, pEF1-Lco, pCAGGS-F5Rco and pCAGGS-T7mco (EFnpL) and pSeV+EmGFP/TSdF were used in these cells. Fluorescence intensity derived from EmGFP from cells 3 days after reconstitution was measured. A two-fold improvement in SeV reconstitution efficiency was observed in Vero-F-E3Y3 cells.
- P is driven from the CAG promoter and L is driven from the EF1 ⁇ promoter
- EFnCAGpL with N driven from the EF1 ⁇ promoter and P and L from the CAG promoter In the combination of CAGnpEFL in which P is driven from the CAG promoter and L is driven from the EF1 ⁇ promoter, the effect of different promoters on SeV reconstitution efficiency was investigated. Fluorescence intensity derived from EmGFP from cells 3 days after reconstitution was measured.
- the infection titer of the culture supernatant on day 3 from the start of SeV reconstitution was higher in the LLC-MK2-F cell reconstitution system than in the PKR inhibitor-free control. In the reconstituted system of VERO-F cells, it improved 7460 times.
- SeV carrying a gene encoding a PKR inhibitor was evaluated for SeV reconstitution efficiency.
- a cell population containing only LLC-MK2-F was used.
- CAGnpEFL was used as a plasmid for SeV reconstruction.
- pSeV includes pSeV(PM)EmGFP/TSdF, pSeV(PM)EmGFP-VAI74a/TSdF (loaded with VAI (180bp)74a), and pSeV(PM)EmGFP-VAI74aL/TSdF (loaded with VAI(330bp)74a).
- EmGFP-VAI74a had the sequence as shown in SEQ ID NO:32.
- EmGFP-VAI74aL had the sequence as shown in SEQ ID NO:33.
- VAI (264 bp) 74c3p (SEQ ID NO: 34) is obtained by adding an 84-mer on the 3' side of VAI to the 3' side of VAI (180 bp) 74c.
- VAI (246 bp) 74c5p (SEQ ID NO: 35) is obtained by adding an 86-mer on the 5' side of VAI to the 5' side of VAI (180 bp) 74c.
- a cell population containing only LLC-MK2-F was used as SeV reconstitution cells.
- CAGnpEFL was used as a plasmid for SeV reconstruction.
- pSeV used pSeV+EmGFP/TSdF.
- pCAGGS-NS5A148 was used as a plasmid containing a PKR inhibitor. This plasmid produces NS5A148, which has the amino acid sequence set forth in SEQ ID NO:16. Comparing the fluorescence intensity derived from EmGFP from the cells 3 days after reconstitution, it was 7.3 times that of the control in the presence of NS5A148.
- Hh-Rbz hammerhead ribozyme
- Hh-Rbz hammerhead ribozyme
- a T7 terminator (SEQ ID NO: 38) was placed downstream of VAI (330 bp) 74c.
- VAI 330 bp
- a cell population containing only LLC-MK2-F was used.
- CAGnpEFL was used as a plasmid for SeV reconstruction.
- pSeV used pSeV+EmGFP/TSdF (control), pSeV+EmGFP/TSdF (Hh), and pSeV+EmGFP/TSdF (Hv).
- VAI (330 bp) 74c was integrated into the SeV genome obtained using the following primer set (L primer) that amplifies the L gene of the SeV genome and a primer set (Hv primer) that amplifies VAI (330 bp) 74c.
- L primer primer set that amplifies the L gene of the SeV genome
- Hv primer primer set that amplifies VAI (330 bp) 74c.
- the SeV genome transcribed above was collected from Vero cells and cDNA was synthesized. KOD One PCR Master Mix -Blue- (Toyobo) was used as the PCR enzyme.
- L primer the primer set for amplifying the L gene amplified a part of the L gene as expected in the plasmid (pSeV) carrying the gene encoding SeV, and also in the SeV genome. Part of the L gene was amplified as expected.
- Hv primers did not amplify VAI (330 bp) 74c in the SeV genome.
- VAI (330 bp) 74c introduction of VAI (330 bp) 74c into a plasmid for SeV reconstitution
- VAI (330 bp) 74c was introduced into a plasmid expressing the components of the SeV particle for reconstituting SeV. Specifically, a reconstruction experiment was performed as follows.
- VAI (330 bp) 74c was additionally loaded into a reconstitution plasmid such as pCAGGS or pEF1 expressing NP, P, L, T7, and F5R, respectively, to obtain a reconstitution plasmid carrying VAI (330 bp) 74c.
- a reconstitution plasmid such as pCAGGS or pEF1 expressing NP, P, L, T7, and F5R, respectively.
- pCAGGSv and "pEFv”
- pCAGGSv-NPco, pCAGGSv-P4C(-)co, pEFv-Lco, pCAGGSv-T7mco, and pCAGGSv-F5Rco, as well as combinations thereof, are denoted as vCAGnpEFL.
- vCAGnpEFL was used as a plasmid for SeV reconstruction.
- CAG was used as a control.
- pSeV+EmGFP/TSdF was used as pSeV. Comparing the fluorescence intensity derived from EmGFP from cells 3 days after reconstitution, vCAGnpEFL-mix was 43 times higher than the control, as shown in FIG.
- Hv+vCAGnpEFL-mix+E3Y3 was 29,925 times higher than the control, as shown in FIG. SeV reconstruction was possible even if F5R and E3Y3 were not used during reconstruction.
- a SeV genome plasmid driven by a CAG promoter or an EF1 promoter in addition to the T7 promoter was constructed (see Fig. 21A).
- the SeV genomic plasmid with the CAG promoter is denoted as pCAGGS-SeV
- the SeV genomic plasmid with the EF1 promoter is denoted as pEF1-SeV.
- a cell population containing only LLC-MK2-F was used as cells for reconstitution.
- CAGnpEFL was used as a plasmid for SeV reconstruction.
- pSeV+EmGFP/TSdF Hv
- pCAG-SeV+EmGFP/TSdF Hv
- pEF1-SeV+EmGFP/TSdF Hv
- pT7-VAI 330 bp
- the reference sequence of the MuV genome was the sequence registered under Accession: KY295913.
- the MuV minigenome was generated by removing everything between the leader and trailer sequences from the above reference sequence.
- MeV measles virus
- MeV-mix was used as a plasmid for MeV reconstruction.
- MeV-mix contained the following plasmids: pCAGGS-MeV-N, pCAGGS-MeV-P, pCAGGS-MeV-L, pCAGGS-T7mco.
- pMeV+EmGFP/mini was used as pMeV.
- pT7-VAI 330 bp
- the reference sequence of MeV was the sequence registered under Accession: KY295921.
- the MeV minigenome was constructed by removing everything between the leader and trailer sequences from the above reference sequence.
- VSV vesicular stomatitis virus
- VSV vesicular stomatitis virus
- VSV-mix including pCAGGS-VSV-N, pCAGGS-VSV-P, pCAGGS-VSV-L, and pCAGGS-T7mco
- pVSV- ⁇ G-GFP-2.6 Kerafast
- pCAGGS-E3Y3 was used as a PKR inhibitor.
- the fluorescence intensity was five times higher when E3Y3 was used.
- a plasmid mixture for MuV reconstruction containing pCAGGS-MuV-N, pCAGGS-MuV-P, pCAGGS-MuV-L and pCAGGS-T7mco is referred to as "MuV-mix”.
- the MeV genome plasmid used was pMeV+EmGFP/mini, which carries EmGFP in the MeV minigenome that does not express MeV constituent proteins (N, P, M, F, H, L).
- the MuV genome plasmid used was pMuV+EmGFP/mini, in which EmGFP was incorporated into the MuV minigenome that does not express MuV constituent proteins (N, P, M, F, SH, HN, L).
- the SeV genome plasmid used was pSeV+EmGFP/TSdF(Hv). A cell population containing only LLC-MK2-F was used as these reconstituting cells.
- p3vLPNP a plasmid that expresses NP, P, and L from one plasmid was constructed (see FIG. 27A).
- pSeV avoided the use of T7 polymerase by being driven by the CAG promoter (pCAG-SeV) or the EF1 promoter (pEF1-SeV).
- SeV was reconstituted with a cell population containing LLC-MK2 only. The results were as shown in Figure 27B.
- FIG. 27B 7 days after reconstitution, EmGFP fluorescence was observed in both pCAG-SeV and pEF1-SeV, confirming that SeV was reconstituted.
- T7 polymerase was additionally supplied by the pCAGGS-T7mco plasmid, the efficiency of reconstitution was greatly improved.
- SEQ ID NO: 1 Example of sequence of EF1 ⁇ promoter SEQ ID NO: 2: Example of sequence of CAG promoter SEQ ID NO: 3: Example of sequence of gene encoding EmGFP SEQ ID NO: 4: Sequence of EBER of EB virus SEQ ID NO: 5 : Sequence of TAR of HIV SEQ ID NO: 6: 2A pro of poliovirus SEQ ID NO: 7: E3L of vaccinia virus SEQ ID NO: 8: Reovirus ⁇ 3 SEQ ID NO:9: Human p58 IPK SEQ ID NO: 10: K3L of vaccinia virus SEQ ID NO: 11: HIV Tat SEQ ID NO: 12: ICP34.5 of herpes simplex virus SEQ ID NO: 13: nc866 SEQ ID NO: 14: long version of nc866 SEQ ID NO: 15: NS5A SEQ ID NO: 16: NS5A (1-148) SEQ ID NO: 17: VAI (180mer) SEQ ID NO: 18
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Abstract
Description
(1)マイナス鎖RNAウイルスまたはウイルスベクターを製造する方法であって、
制御配列に作動可能に連結したプロテインキナーゼR(PKR)阻害性の因子(例えば、PKR阻害性のウイルス性因子、ヒトnc886、ヒトp58IPK、もしくはNS5A、またはこれらの組合せ)をコードする遺伝子から当該因子を発現させてパッケージング細胞に供給することと、
パッケージング細胞にマイナス鎖RNAウイルスまたはウイルスベクターのゲノムRNAを発現させ、前記因子の存在下でマイナス鎖RNAウイルスまたはウイルスベクターを形成させることと{例えば、PKR阻害性の因子、例えば、PKR阻害性のウイルス性因子の存在下でパッケージング細胞にマイナス鎖RNAウイルスまたはウイルスベクターのゲノムRNAを発現させ、マイナス鎖RNAウイルスまたはウイルスベクターを形成させることと、ここで、好ましくは、下記(13)に記載のDNAを用いて、ゲノムRNAおよび上記PKR阻害性の因子を発現させることができる}、
形成されたマイナス鎖RNAウイルスまたはウイルスベクターを回収することと、
を含み、
好ましくは、前記ウイルスまたはウイルスベクターと前記PKR阻害性の因子との関係が異種である、および/または、前記制御配列と前記PKR阻害性の因子との関係が異種である、
方法。
(2)マイナス鎖RNAウイルスまたはウイルスベクターが、センダイウイルスベクターである、上記(1)に記載の方法。
(3)前記PKR阻害性の因子が、アデノウイルスのVAI RNA、EBウイルスのEBER、ヒトnc886、HIVウイルスのTAR、ポリオウイルスの2Apro、ワクシニアウイルスのE3L、レオウイルスのδ3、インフルエンザウイルスのNS1、ヒトp58IPK、C型肝炎ウイルスのNS5A、ワクシニアウイルスのK3L、HIVウイルスのTat、単純ヘルペスウイルスのUs11、および単純ヘルペスウイルスのICP34.5、並びにこれらのオーソログからなる群から選択される1以上である、上記(1)または(2)に記載の方法。
(4)ヘルパーウイルス非存在下でマイナス鎖RNAウイルスまたはウイルスベクターを製造する、上記(1)~(3)のいずれかに記載の方法。
(5)前記ゲノムRNAが、制御配列に作動可能に連結したPKR阻害性の因子をコードする遺伝子をさらに有する、上記(1)~(4)のいずれかに記載の方法。
(6)前記パッケージング細胞が、制御配列に作動可能に連結したPKR阻害性の因子をコードする遺伝子を有するゲノムDNAを有する、上記(1)~(5)のいずれかに記載の方法。
(7)前記パッケージング細胞が、Vero細胞またはLLC-MK2細胞である、上記(1)~(6)のいずれかに記載の方法。
(8)前記パッケージング細胞が、Vero細胞からなる細胞集団またはLLC-MK2細胞からなる細胞集団であって、他の細胞を含まない細胞集団である、上記(1)~(7)のいずれかに記載の方法。
(9)PKR阻害性の因子のいずれか1以上をコードする遺伝子を発現可能に含む、マイナス鎖RNAウイルスまたはウイルスベクターのRNAゲノム。
(10)上記(9)に記載のRNAゲノムを含む、マイナス鎖RNAウイルスまたはウイルスベクター。
(11)目的遺伝子をさらに含む、上記(10)に記載のマイナス鎖RNAウイルスまたはウイルスベクター。
(12)上記(10)または(11)に記載のマイナス鎖RNAウイルスまたはウイルスベクターを含む、組成物。
(13)上記(9)に記載のRNAゲノムをコードするDNA。
(14)制御配列に作動可能に連結された上記(13)に記載のDNAを含む、遺伝子発現ベクター。 According to the present invention, for example, the following inventions can be provided.
(1) A method for producing a negative-strand RNA virus or viral vector, comprising:
from a gene encoding a protein kinase R (PKR) inhibitory factor (e.g., a PKR inhibitory viral factor, human nc886, human p58 IPK , or NS5A, or a combination thereof) operably linked to a regulatory sequence; expressing and supplying the factor to packaging cells;
Expressing the genomic RNA of a minus-strand RNA virus or viral vector in a packaging cell to form a minus-strand RNA virus or viral vector in the presence of said factor {e.g., a PKR-inhibiting factor, e.g., a PKR-inhibiting expressing the genomic RNA of the minus-strand RNA virus or viral vector in the packaging cell in the presence of the viral factor of to form the minus-strand RNA virus or viral vector; The described DNA can be used to express the genomic RNA and the PKR inhibitory factor},
recovering the formed negative-strand RNA virus or viral vector;
including
Preferably, the relationship between said virus or viral vector and said PKR-inhibiting agent is heterologous, and/or the relationship between said regulatory sequence and said PKR-inhibiting agent is heterologous.
Method.
(2) The method according to (1) above, wherein the minus-strand RNA virus or viral vector is a Sendai virus vector.
(3) the PKR inhibitory factor is adenovirus VAI RNA, EB virus EBER, human nc886, HIV virus TAR, poliovirus 2A pro , vaccinia virus E3L, reovirus δ3, influenza virus NS1 , human p58 IPK , hepatitis C virus NS5A, vaccinia virus K3L, HIV virus Tat, herpes simplex virus Us11, and herpes simplex virus ICP34.5, and orthologs thereof. The method according to (1) or (2) above.
(4) The method according to any one of (1) to (3) above, wherein the minus-strand RNA virus or viral vector is produced in the absence of a helper virus.
(5) The method according to any one of (1) to (4) above, wherein the genomic RNA further comprises a gene encoding a PKR inhibitory factor operably linked to the regulatory sequence.
(6) The method according to any one of (1) to (5) above, wherein the packaging cell has genomic DNA having a gene encoding a PKR inhibitory factor operably linked to a regulatory sequence.
(7) The method according to any one of (1) to (6) above, wherein the packaging cells are Vero cells or LLC-MK2 cells.
(8) Any one of (1) to (7) above, wherein the packaging cells are a cell population consisting of Vero cells or a cell population consisting of LLC-MK2 cells, and do not contain other cells. The method described in .
(9) The RNA genome of a negative-strand RNA virus or viral vector that expressably contains a gene encoding any one or more of the PKR inhibitory factors.
(10) A minus-strand RNA virus or viral vector comprising the RNA genome of (9) above.
(11) The minus-strand RNA virus or viral vector according to (10) above, further comprising a target gene.
(12) A composition comprising the minus-strand RNA virus or viral vector of (10) or (11) above.
(13) A DNA encoding the RNA genome of (9) above.
(14) A gene expression vector comprising the DNA of (13) above operably linked to a control sequence.
(16)上記(12)に記載の組成物であって、感染力価が1×106 CIU/mL以上である、組成物。
(17)上記(12)に記載の組成物であって、感染力価が1×107 CIU/mL以上である、組成物。
(18)前記PKR阻害性の因子が、配列番号4~31のいずれかに記載の配列を有する、上記(1)~(8)のいずれかに記載の方法。
(19)前記PKR阻害性の因子が、配列番号4~31のいずれかに記載の配列を有する、上記(9)~(11)のいずれかに記載のマイナス鎖RNAウイルスまたはウイルスベクター。
(20)前記PKR阻害性の因子が、配列番号4~31のいずれかに記載の配列を有する、上記(12)に記載の組成物。
(21)前記PKR阻害性の因子が、配列番号4~31のいずれかに記載の配列を有する、上記(13)に記載のDNA。
(22)前記PKR阻害性の因子が、配列番号4~31のいずれかに記載の配列を有する、上記(14)に記載の遺伝子発現ベクター。 (15) The composition according to (12) above, which has an infectious titer of 1×10 5 CIU/mL or more.
(16) The composition according to (12) above, which has an infectious titer of 1×10 6 CIU/mL or more.
(17) The composition according to (12) above, which has an infectious titer of 1×10 7 CIU/mL or more.
(18) The method according to any one of (1) to (8) above, wherein the PKR inhibitory factor has the sequence set forth in any one of SEQ ID NOS: 4-31.
(19) The minus-strand RNA virus or viral vector according to any one of (9) to (11) above, wherein the PKR inhibitory factor has a sequence according to any one of SEQ ID NOS: 4-31.
(20) The composition according to (12) above, wherein the PKR inhibitory factor has a sequence according to any one of SEQ ID NOS: 4-31.
(21) The DNA according to (13) above, wherein the PKR inhibitory factor has a sequence according to any one of SEQ ID NOS: 4-31.
(22) The gene expression vector according to (14) above, wherein the PKR inhibitory factor has a sequence according to any one of SEQ ID NOS: 4-31.
(24)前記ゲノムRNAを発現させることが、第2の制御配列に作動可能に連結された前記ゲノムRNAをコードする遺伝子を有するプラスミドベクターをパッケージング細胞に導入することにより実施される、上記(1)~(8)のいずれかに記載の方法。
(25)前記因子を発現させることが、第1の制御配列に作動可能に連結された前記因子をコードする遺伝子を有するプラスミドベクターをパッケージング細胞に導入することにより実施され、かつ、
前記ゲノムRNAを発現させることが、第2の制御配列に作動可能に連結された前記ゲノムRNAをコードする遺伝子を有するプラスミドベクターをパッケージング細胞に導入することにより実施される、上記(1)~(8)のいずれかに記載の方法。
(26)マイナス鎖RNAウイルスまたはウイルスベクターを形成させることが、パッケージング細胞に、第2の制御配列に作動可能に連結されたウイルスのゲノムRNAをコードする遺伝子を有するプラスミドと、第3の制御配列に作動可能に連結されたウイルスの構成要素をコードする遺伝子を有するプラスミドを導入し、当該細胞内でゲノムRNAとウイルスの構成要素とを発現させることを含む、上記(1)~(8)のいずれかに記載の方法。
(27)第3の制御配列が、EF1αプロモーターであり、ウイルスの構成要素が、Nタンパク質およびLタンパク質のいずれかまたは両方を含む、上記(26)に記載の方法。(28)第3の制御配列が、EF1αプロモーターであり、ウイルスの構成要素が、Nタンパク質、Pタンパク質およびLタンパク質からなる群から選択される1以上、またはすべてである、上記(26)に記載の方法。
(29)パッケージング細胞が、Vero細胞である、上記(28)に記載の方法。
(30)第3の制御配列が、EF1αプロモーターであり、ウイルスの構成要素が、Pタンパク質およびLタンパク質のいずれかまたは両方を含む、上記(26)に記載の方法。(31)第3の制御配列が、EF1αプロモーターであり、ウイルスの構成要素が、Lタンパク質である、上記(26)に記載の方法。
(32)パッケージング細胞が、LLC-MK2細胞である、上記(30)に記載の方法。
(33)パッケージング細胞が、LLC-MK2細胞である、上記(31)に記載の方法。 (23) The above (1), wherein expressing the factor is carried out by introducing into the packaging cell a plasmid vector having a gene encoding the factor operably linked to a first control sequence. The method according to any one of (8).
(24) The above ( 1) The method according to any one of (8).
(25) expressing the factor is performed by introducing into the packaging cell a plasmid vector having a gene encoding the factor operably linked to a first regulatory sequence; and
(1) to above, wherein the expression of the genomic RNA is performed by introducing a plasmid vector having a gene encoding the genomic RNA operably linked to a second regulatory sequence into the packaging cell. (8) The method according to any one of the above.
(26) Forming a negative-strand RNA virus or viral vector comprises placing in the packaging cell a plasmid having a gene encoding viral genomic RNA operably linked to a second control sequence and a third control (1) to (8) above, comprising introducing a plasmid having a gene encoding a viral component operably linked to a sequence and expressing the genomic RNA and the viral component in the cell. The method according to any one of
(27) The method according to (26) above, wherein the third regulatory sequence is the EF1α promoter and the viral component comprises either or both of the N protein and the L protein. (28) The above (26), wherein the third regulatory sequence is the EF1α promoter, and the viral component is one or more selected from the group consisting of N protein, P protein and L protein, or all of them. the method of.
(29) The method according to (28) above, wherein the packaging cells are Vero cells.
(30) The method according to (26) above, wherein the third regulatory sequence is the EF1α promoter and the viral component comprises either or both of the P protein and the L protein. (31) The method according to (26) above, wherein the third regulatory sequence is the EF1α promoter and the viral component is the L protein.
(32) The method according to (30) above, wherein the packaging cells are LLC-MK2 cells.
(33) The method according to (31) above, wherein the packaging cells are LLC-MK2 cells.
(i)E3Lまたはその一部、好ましくは、E3Lの少なくともC末端の107アミノ酸を含むペプチドと
(ii)K3Lと
を含む、上記のいずれかに記載の方法。
(35)PKR阻害性の因子が、
(i)E3Lまたはその一部、好ましくは、E3Lの少なくともC末端の107アミノ酸を含むペプチドと
(iii)Y3と
を含む、上記のいずれかに記載の方法。
(36)PKR阻害性の因子が、VAIをさらに含む、上記(34)に記載の方法。
(37)PKR阻害性の因子が、VAIをさらに含む、上記(35)に記載の方法。
(38)PKR阻害性の因子が、VAIを含み、VAIが配列番号17に記載の配列を有する分子である、上記いずれかに記載の方法。
(39)PKR阻害性の因子が、VAIを含み、PKR阻害性の因子が配列番号19に記載の配列を有する分子である、上記いずれかに記載の方法。
(40)PKR阻害性の因子が、配列番号18、21~26のいずれかに記載の配列を有する分子である、上記のいずれかに記載の方法。
(41)PKR阻害性の因子が、nc886を含む、上記のいずれかに記載の方法。
(42)PKR阻害性の因子が、配列番号13または14に記載の配列を有する分子である、上記のいずれかに記載の方法。 (34) the PKR inhibitory factor is
A method according to any of the above, comprising (i) E3L or a portion thereof, preferably a peptide comprising at least the C-terminal 107 amino acids of E3L, and (ii) K3L.
(35) the PKR inhibitory factor is
A method according to any of the above, comprising (i) E3L or a portion thereof, preferably a peptide comprising at least the C-terminal 107 amino acids of E3L, and (iii) Y3.
(36) The method according to (34) above, wherein the PKR inhibitory factor further comprises VAI.
(37) The method according to (35) above, wherein the PKR inhibitory factor further comprises VAI.
(38) The method according to any of the above, wherein the PKR inhibitory factor comprises VAI, and VAI is a molecule having the sequence set forth in SEQ ID NO:17.
(39) The method according to any of the above, wherein the PKR inhibitory factor comprises VAI and the PKR inhibitory factor is a molecule having the sequence set forth in SEQ ID NO:19.
(40) The method according to any of the above, wherein the PKR inhibitory factor is a molecule having the sequence set forth in any of SEQ ID NOS: 18, 21-26.
(41) The method according to any of the above, wherein the PKR inhibitory factor comprises nc886.
(42) The method according to any of the above, wherein the PKR inhibitory agent is a molecule having the sequence set forth in SEQ ID NO: 13 or 14.
(44)前記パッケージング細胞が、制御配列に作動可能に連結したPKR阻害性の因子をコードする遺伝子を有するゲノムDNAを有する、上記(43)のいずれかに記載の方法。
(45)前記パッケージング細胞が、Vero細胞またはLLC-MK2細胞である、上記(44)または(45)に記載の方法。
(46)前記パッケージング細胞が、Vero細胞からなる細胞集団またはLLC-MK2細胞からなる細胞集団であって、他の細胞を含まない細胞集団である、上記(44)~(46)のいずれかに記載の方法。 (43) The method according to (5) above, wherein the genomic RNA has a gene encoding a target protein, and the PKR inhibitory factor is VAI or a sequence according to any one of SEQ ID NOS: 17-26. wherein VAI is contained in the 3'UTR of a gene encoding said protein of interest.
(44) The method according to any of (43) above, wherein the packaging cell has genomic DNA having a gene encoding a PKR inhibitory factor operably linked to a regulatory sequence.
(45) The method according to (44) or (45) above, wherein the packaging cells are Vero cells or LLC-MK2 cells.
(46) Any one of (44) to (46) above, wherein the packaging cells are a cell population consisting of Vero cells or a cell population consisting of LLC-MK2 cells, and do not contain other cells. The method described in .
(48)上記(47)に記載のRNAゲノムを含む、マイナス鎖RNAウイルスまたはウイルスベクター。 (47) The RNA genome according to (9) above, which has a gene encoding a target protein, and wherein the PKR inhibitory factor has VAI or a sequence according to any one of SEQ ID NOS: 17-26. molecule, wherein the RNA molecule having a sequence set forth in VAI or any of SEQ ID NOS: 17-26 is contained in the 3'UTR of a gene encoding said protein of interest.
(48) A minus-strand RNA virus or viral vector comprising the RNA genome of (47) above.
制御配列に作動可能に連結したNS5Aをコードする遺伝子から当該因子を発現させてパッケージング細胞に供給することと、
NS5Aの存在下でパッケージング細胞にマイナス鎖RNAウイルスまたはウイルスベクターのゲノムRNAを発現させ、マイナス鎖RNAウイルスまたはウイルスベクターを形成させることと、
形成されたマイナス鎖RNAウイルスまたはウイルスベクターを回収することと、
を含み、
前記ウイルスまたはウイルスベクターと前記NS5Aとの関係が異種である、および/または、前記制御配列と前記NS5Aとの関係が異種である、
方法。
(50)マイナス鎖RNAウイルスまたはウイルスベクターを製造する方法であって、
制御配列に作動可能に連結したPKR阻害性の因子をコードする遺伝子から当該因子を発現させてパッケージング細胞に供給することと、ここで、PKR阻害性の因子は、ヒトnc886(VTRNA2-1)およびヒトp58IPKのいずれか、または両方であり、
前記PKR阻害性の因子の存在下でパッケージング細胞にマイナス鎖RNAウイルスまたはウイルスベクターのゲノムRNAを発現させ、マイナス鎖RNAウイルスまたはウイルスベクターを形成させることと、
形成されたマイナス鎖RNAウイルスまたはウイルスベクターを回収することと、
を含む、
ここで、前記制御配列と前記PKR阻害性の因子との関係が異種であってもよい、
方法。
(51)マイナス鎖RNAウイルスまたはウイルスベクターが、センダイウイルスベクターである、上記(49)または(50)に記載の方法。
(52)前記ゲノムRNAが、制御配列に作動可能に連結したPKR阻害性の因子をコードする遺伝子をさらに有する、上記(49)~(51)のいずれかに記載の方法。
(53)前記パッケージング細胞が、制御配列に作動可能に連結したPKR阻害性の因子をコードする遺伝子を有するゲノムDNAを有する、上記(49)~(52)のいずれかに記載の方法。
(54)前記パッケージング細胞が、Vero細胞またはLLC-MK2細胞である、上記(49)~(53)のいずれかに記載の方法。
(55)前記パッケージング細胞が、Vero細胞からなる細胞集団またはLLC-MK2細胞からなる細胞集団であって、他の細胞を含まない細胞集団である、上記(49)~(54)のいずれかに記載の方法。
(56)PKR阻害性の因子のいずれか1以上をコードする遺伝子を発現可能に含む、マイナス鎖RNAウイルスまたはウイルスベクターのRNAゲノム。
(57)上記(56)に記載のRNAゲノムを含む、マイナス鎖RNAウイルスまたはウイルスベクター。
(58)目的遺伝子をさらに含む、上記(57)に記載のマイナス鎖RNAウイルスまたはウイルスベクター。
(59)上記(57)または(58)に記載のマイナス鎖RNAウイルスまたはウイルスベクターを含む、組成物。
(60)上記(56)に記載のRNAゲノムをコードするDNA。
(61)制御配列に作動可能に連結された上記(60)に記載のDNAを含む、遺伝子発現ベクター。 (49) A method for producing a negative-strand RNA virus or viral vector, comprising:
expressing the factor from the gene encoding NS5A operably linked to regulatory sequences and supplying it to packaging cells;
expressing the genomic RNA of a negative-strand RNA virus or viral vector in a packaging cell in the presence of NS5A to form a negative-strand RNA virus or viral vector;
recovering the formed negative-strand RNA virus or viral vector;
including
the relationship between said virus or viral vector and said NS5A is heterologous and/or the relationship between said regulatory sequence and said NS5A is heterologous;
Method.
(50) A method for producing a negative-strand RNA virus or viral vector, comprising:
expressing the factor from a gene encoding the PKR-inhibiting factor operably linked to regulatory sequences and supplying it to packaging cells, wherein the PKR-inhibiting factor is human nc886 (VTRNA2-1) and either or both of human p58 IPK ;
allowing the packaging cell to express the genomic RNA of the negative-strand RNA virus or viral vector in the presence of the PKR inhibitory factor to form a negative-strand RNA virus or viral vector;
recovering the formed negative-strand RNA virus or viral vector;
including,
wherein the relationship between the regulatory sequence and the PKR inhibitory factor may be heterologous;
Method.
(51) The method according to (49) or (50) above, wherein the minus-strand RNA virus or viral vector is a Sendai virus vector.
(52) The method according to any one of (49) to (51) above, wherein the genomic RNA further comprises a gene encoding a PKR inhibitory factor operably linked to the regulatory sequence.
(53) The method according to any one of (49) to (52) above, wherein the packaging cell has genomic DNA having a gene encoding a PKR inhibitory factor operably linked to a regulatory sequence.
(54) The method according to any one of (49) to (53) above, wherein the packaging cells are Vero cells or LLC-MK2 cells.
(55) Any one of (49) to (54) above, wherein the packaging cells are a cell population consisting of Vero cells or a cell population consisting of LLC-MK2 cells, and do not contain other cells. The method described in .
(56) The RNA genome of a negative-strand RNA virus or viral vector that expressably comprises a gene encoding any one or more of the PKR inhibitory factors.
(57) A minus-strand RNA virus or viral vector comprising the RNA genome of (56) above.
(58) The minus-strand RNA virus or viral vector of (57) above, further comprising a gene of interest.
(59) A composition comprising the minus-strand RNA virus or viral vector of (57) or (58) above.
(60) A DNA encoding the RNA genome of (56) above.
(61) A gene expression vector comprising the DNA of (60) above operably linked to a control sequence.
前記第一のDNAは、RNAウイルスのRNAゲノムをコードし、
前記第二のDNAは、プロテインキナーゼR(PKR)阻害性の因子(例えば、PKR阻害性のウイルス性因子(好ましくは、VAI RNA、EBER、nc886、およびTAR、並びにこれらのオーソログ))をコードし、
第一のDNAと第二のDNAを含む一つながりの領域を形成し、当該領域は、制御配列に作動可能に連結されており、これにより、第一のDNAと第二のDNAは、一本のRNA内に転写される、遺伝子発現ベクター。
(72)プロテインキナーゼR(PKR)阻害性の因子が、VAIである、上記(71)に記載の遺伝子発現ベクター。
(73)第一のDNAと第二のDNAとの間に、自己切断型リボザイムの配列をさらに含む、上記(71)に記載の遺伝子発現ベクター。
(74)第一のDNAと第二のDNAとの間に、自己切断型リボザイムの配列をさらに含む、上記(72)に記載の遺伝子発現ベクター。
(75)制御配列と第一のDNAとの間に、自己切断型リボザイムの配列をさらに含む、上記(71)に記載の遺伝子発現ベクター。
(76)制御配列と第一のDNAとの間に、自己切断型リボザイムの配列をさらに含む、上記(72)に記載の遺伝子発現ベクター。
(77)制御配列と第一のDNAとの間に、自己切断型リボザイムの配列をさらに含む、上記(73)に記載の遺伝子発現ベクター。
(78)制御配列と第一のDNAとの間に、自己切断型リボザイムの配列をさらに含む、上記(74)に記載の遺伝子発現ベクター。
(79)VAI RNAが、配列番号19、20、および23~26の一部であって、配列番号17に記載のヌクレオチド配列を含む配列を有していてもよい、上記いずれかに記載の発明。
(80)VAI RNAが、配列番号19、20、および23~26の一部であって、配列番号17に記載のヌクレオチド配列を含む配列に対応する、(i) VAI RNAと、(ii) VAI RNAの5’側の配列および3’側の配列のいずれかまたは両方を含む配列を有する、上記いずれかに記載の発明。 (71) A gene expression vector (preferably a plasmid) for the RNA genome, comprising a regulatory sequence (preferably a promoter sequence), a first DNA and a second DNA in that order,
the first DNA encodes the RNA genome of an RNA virus;
The second DNA encodes a protein kinase R (PKR) inhibitory factor (e.g., a PKR inhibitory viral factor (preferably VAI RNA, EBER, nc886, and TAR, and orthologs thereof)). ,
forming a contiguous region comprising a first DNA and a second DNA, the region being operably linked to a regulatory sequence, whereby the first DNA and the second DNA are united A gene expression vector that is transcribed into the RNA of
(72) The gene expression vector of (71) above, wherein the protein kinase R (PKR) inhibitory factor is VAI.
(73) The gene expression vector according to (71) above, further comprising a self-cleaving ribozyme sequence between the first DNA and the second DNA.
(74) The gene expression vector of (72) above, further comprising a self-cleaving ribozyme sequence between the first DNA and the second DNA.
(75) The gene expression vector according to (71) above, further comprising a self-cleaving ribozyme sequence between the regulatory sequence and the first DNA.
(76) The gene expression vector of (72) above, further comprising a self-cleaving ribozyme sequence between the control sequence and the first DNA.
(77) The gene expression vector of (73) above, further comprising a self-cleaving ribozyme sequence between the regulatory sequence and the first DNA.
(78) The gene expression vector of (74) above, further comprising a self-cleaving ribozyme sequence between the regulatory sequence and the first DNA.
(79) The invention according to any one of the above, wherein the VAI RNA is part of SEQ ID NOS: 19, 20, and 23-26 and may have a sequence comprising the nucleotide sequence set forth in SEQ ID NO: 17. .
(80) (i) VAI RNA, wherein the VAI RNA is part of SEQ ID NOS: 19, 20, and 23-26 and corresponds to a sequence comprising the nucleotide sequence set forth in SEQ ID NO: 17; and (ii) VAI Any of the above inventions having a sequence that includes either or both of the 5' and 3' sequences of RNA.
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有する核酸であり得る。後述する実施例によれば、パッケージング細胞においてPKRを阻害することによりウイルスの再構成率が向上する。したがって、阻害するPKRは、好ましくは、パッケージング細胞が由来する動物種である。例えば、Vero細胞は、アフリカミドリザルに由来し、LLC-MK2細胞は、アカゲザルに由来する。したがって、これらの細胞においては、それぞれアフリカミドリザル、およびアカゲザルのPKRを阻害することが好ましい。 In some embodiments, the VAI RNA can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO: 17, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO: 17 are , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity to the sequence set forth in SEQ ID NO: 17 or (iv) a fragment thereof, and
It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR). According to Examples described later, the viral reconstitution rate is improved by inhibiting PKR in packaging cells. Accordingly, the PKR to be inhibited is preferably the animal species from which the packaging cells are derived. For example, Vero cells are derived from African green monkeys and LLC-MK2 cells are derived from rhesus monkeys. Therefore, it is preferable to inhibit African green monkey and rhesus monkey PKR in these cells, respectively.
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有する核酸であり得る。 In some embodiments, the EBER can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO:4, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO:4 are It can be a nucleic acid consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO: 4 can be a nucleic acid, or (iv) can be a fragment thereof, and
It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有する核酸であり得る。 In some embodiments, the TAR can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO:5, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO:5 are It can be a nucleic acid consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO:5 can be a nucleic acid, or (iv) can be a fragment thereof, and
It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有するペプチドであり得る。 In some embodiments, the 2A pro can be a peptide comprising (i) the sequence set forth in SEQ ID NO:6, and (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO:6 , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity with the sequence set forth in SEQ ID NO: 6 or (iv) a fragment thereof, and
It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有するペプチドであり得る。 In some embodiments, E3L can be a peptide comprising (i) the sequence set forth in SEQ ID NO:7, and (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO:7 are It can be a peptide consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO:7 may be a peptide, or (iv) a fragment thereof, and
It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有するペプチドであり得る。 In some embodiments, σ3 can be (i) a peptide comprising the sequence set forth in SEQ ID NO:8, and (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO:8 are It can be a peptide consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO:8 may be a peptide, or (iv) a fragment thereof, and
It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有するペプチドであり得る。 In some aspects, the p58 IPK can be a peptide comprising (i) the sequence set forth in SEQ ID NO:9, and (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO:9 , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity to the sequence set forth in SEQ ID NO:9 or (iv) a fragment thereof, and
It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有するペプチドであり得る。 In some embodiments, K3L can be a peptide comprising (i) the sequence set forth in SEQ ID NO: 10, and (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO: 10 are It can be a peptide consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO: 10 may be a peptide, or (iv) a fragment thereof, and
It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有するペプチドであり得る。 In certain aspects, Tat can be a peptide comprising (i) the sequence set forth in SEQ ID NO: 11, and (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO: 11 are It can be a peptide consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO: 11 may be a peptide, or (iv) a fragment thereof, and
It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有するペプチドであり得る。 In one aspect, ICP34.5 can be a peptide comprising (i) the sequence set forth in SEQ ID NO: 12, (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO: 12 may be a peptide consisting of a deleted, substituted, inserted and/or added sequence, or (iii) a sequence having 90% or more or 95% or more identity with the sequence set forth in SEQ ID NO: 12 or (iv) a fragment thereof, and
It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有する核酸であり得る。 In some embodiments, nc886 can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO: 13, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO: 13 are It can be a nucleic acid consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO: 13 can be a nucleic acid, or (iv) can be a fragment thereof, and
It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有する核酸であり得る。 In some embodiments, nc886 can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO: 14, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO: 14 are It can be a nucleic acid consisting of a deleted, substituted, inserted, and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO: 14 can be a nucleic acid, or (iv) can be a fragment thereof, and
It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有する核酸であり得る。 In some embodiments, the VAI RNA can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO: 18, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO: 18 are , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity to the sequence set forth in SEQ ID NO: 18 or (iv) a fragment thereof, and
It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有する核酸であり得る。 In some embodiments, the VAI RNA can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO: 19, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO: 19 are , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity to the sequence set forth in SEQ ID NO: 19 or (iv) a fragment thereof, and
It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有する核酸であり得る。 In some embodiments, the VAI RNA can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO:20, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO:20 are , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity to the sequence set forth in SEQ ID NO: 20 or (iv) a fragment thereof, and
It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有する核酸であり得る。 In some embodiments, the VAI RNA can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO:21, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO:21 are , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity to the sequence set forth in SEQ ID NO: 21 or (iv) a fragment thereof, and
It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有する核酸であり得る。 In some embodiments, the VAI RNA can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO:22, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO:22 are , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity to the sequence set forth in SEQ ID NO: 22 or (iv) a fragment thereof, and
It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有する核酸であり得る。 In some embodiments, the VAI RNA can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO:23, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO:23 are , deletions, substitutions, insertions, and/or additions, or (iii) a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO: 23. or (iv) a fragment thereof, and
It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有する核酸であり得る。 In some embodiments, the VAI RNA can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO:24, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO:24 are , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity to the sequence set forth in SEQ ID NO: 24 or (iv) a fragment thereof, and
It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有する核酸であり得る。 In some embodiments, the VAI RNA can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO:25, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO:25 are , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity to the sequence set forth in SEQ ID NO: 25 or (iv) a fragment thereof, and
It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有する核酸であり得る。 In some embodiments, the VAI RNA can be (i) a nucleic acid comprising the sequence set forth in SEQ ID NO:26, and (ii) 1, 2, 3, 4, or 5 nucleic acids in the sequence set forth in SEQ ID NO:26 are , deletions, substitutions, insertions, and/or additions, or (iii) a sequence having 90% or more or 95% or more identity to the sequence set forth in SEQ ID NO: 26 or (iv) a fragment thereof, and
It can be a nucleic acid that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有するペプチドであり得る。 In some embodiments, NS1 can be a peptide comprising (i) the sequence set forth in SEQ ID NO:28, and (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO:28 are It can be a peptide consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO: 28 may be a peptide, or (iv) a fragment thereof, and
It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有するペプチドであり得る。 In some embodiments, Us11 can be a peptide comprising (i) the sequence set forth in SEQ ID NO:29, and (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO:29 are It can be a peptide consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO: 29 may be a peptide, or (iv) a fragment thereof, and
It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有するペプチドであり得る。 In some embodiments, E3K3 can be a fusion sequence of part or all of E3L (e.g., the C-terminal 107 amino acid sequence of E3L) and part or all of K3, preferably part of E3L (more preferably , the C-terminal 107 amino acid sequence of E3L) and K3, and may be a peptide having a function of inhibiting PKR (for example, PKR such as human PKR and monkey PKR). In certain aspects, E3K3 can be a peptide comprising (i) the sequence set forth in SEQ ID NO:30, and (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO:30 are It can be a peptide consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO: 30 may be a peptide, or (iv) a fragment thereof, and
It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
PKR(例えば、ヒトPKRおよびサルPKRなどのPKR)を阻害する機能を有するペプチドであり得る。 In some embodiments, E3Y3 can be a fusion sequence of part or all of E3L (e.g., the C-terminal 107 amino acid sequence of E3L) and part or all of Y3, preferably part of E3L (more preferably , the C-terminal 107 amino acid sequence of E3L) and Y3, and may be a peptide having a function of inhibiting PKR (for example, PKR such as human PKR and monkey PKR). In certain aspects, E3Y3 can be a peptide comprising (i) the sequence set forth in SEQ ID NO:31, and (ii) 1, 2, 3, 4, or 5 amino acids in the sequence set forth in SEQ ID NO:31 are It can be a peptide consisting of a deleted, substituted, inserted and/or added sequence, or (iii) contains a sequence that is 90% or more or 95% or more identical to the sequence set forth in SEQ ID NO: 31 may be a peptide, or (iv) a fragment thereof, and
It can be a peptide that has the function of inhibiting PKR (eg, PKR such as human PKR and monkey PKR).
(A)第1の制御配列に作動可能に連結したプロテインキナーゼR(PKR)阻害性の因子をコードする遺伝子から当該因子を発現させてパッケージング細胞に供給することを含む。 In one aspect, the method of the present invention comprises:
(A) expressing from a gene encoding a protein kinase R (PKR) inhibitory factor operably linked to a first regulatory sequence and supplying the factor to the packaging cell;
また例えば、PKR阻害性のウイルス性因子としては、配列番号19に記載の配列における191番目の塩基に対応するVAIの塩基において置換を有する配列を有し得る。好ましい態様では、PKR阻害性のウイルス性因子は、配列番号24に記載の配列を有し得る。
またある好ましい態様では、PKR阻害性のウイルス性因子は、配列番号25に記載の配列を有し得る。またある好ましい態様では、PKR阻害性のウイルス性因子は、配列番号26に記載の配列を有し得る。 As VAI, one having the sequence set forth in SEQ ID NO: 17 can be used. The VAI may further comprise its preceding and following sequences on the adenoviral genome. Thus, a PKR-inhibiting viral agent may have the sequence set forth in SEQ ID NO:19. VAI may further include VAII. For example, the PKR-inhibiting viral agent may have the sequence set forth in SEQ ID NO:21. VAI may have one or more mutations selected from the group consisting of substitutions, deletions, insertions and additions. For example, a PKR-inhibiting viral agent can have a sequence with a substitution at
Also, for example, a PKR-inhibiting viral factor may have a sequence having a substitution at the VAI base corresponding to the 191st base in the sequence set forth in SEQ ID NO:19. In a preferred embodiment, the PKR-inhibiting viral agent may have the sequence set forth in SEQ ID NO:24.
In another preferred aspect, the PKR-inhibiting viral agent may have the sequence set forth in SEQ ID NO:25. In another preferred embodiment, the PKR-inhibiting viral agent may have the sequence set forth in SEQ ID NO:26.
(B)パッケージング細胞にマイナス鎖RNAウイルスまたはウイルスベクターのゲノムRNAを発現させ、前記因子の存在下でマイナス鎖RNAウイルスまたはウイルスベクターを形成させることと{例えば、PKR阻害性の因子、例えば、PKR阻害性のウイルス性因子の存在下でパッケージング細胞にマイナス鎖RNAウイルスまたはマイナス鎖RNAウイルスベクターのゲノムRNAを発現させ、マイナス鎖RNAウイルスまたはマイナス鎖RNAウイルスベクターを形成させること}
を含む方法が提供される。 According to the present invention, there is provided a method for producing a minus-strand RNA virus or a minus-strand RNA viral vector, comprising:
(B) expressing the genomic RNA of a minus-strand RNA virus or viral vector in packaging cells to form a minus-strand RNA virus or viral vector in the presence of the factor {e.g., a PKR inhibitory factor, e.g., expressing the genomic RNA of a negative-strand RNA virus or negative-strand RNA viral vector in packaging cells in the presence of a PKR-inhibiting viral agent to form a negative-strand RNA virus or negative-strand RNA viral vector}
A method is provided comprising:
(C)形成されたマイナス鎖RNAウイルスまたはマイナス鎖RNAウイルスベクターを回収すること
をさらに含む。 In one aspect of the present invention, the method for producing a negative-strand RNA virus or negative-strand RNA viral vector comprises:
(C) further comprising recovering the formed negative-strand RNA virus or negative-strand RNA viral vector.
マイナス鎖RNAウイルスベクターをウイルスのパッケージング細胞で発現させた。特に発現の際のPKR阻害因子の有効性を評価した。 Preparation of Minus-strand RNA Viral Vectors Minus-strand RNA viral vectors were expressed in virus packaging cells. Specifically, the efficacy of PKR inhibitors upon expression was evaluated.
pCAGGS-neoにSeVのF遺伝子(コザック配列付加、ヒトコドンに最適化)を搭載し、pCAGGS-F-neoを構築した。得られたプラスミドをVero細胞、あるいはLLC-MK2細胞にViaFect(プロメガ社)を用いてトランスフェクションし、1~2mg/mLのG418二硫酸塩溶液(ナカライテスク)を用いて選択し、F遺伝子発現細胞を得た。得られた細胞はVero-F、及びLLC-MK2-Fと表記する。 (1) F gene-expressing cells were prepared as follows.
The SeV F gene (Kozak sequence added, optimized for human codons) was loaded into pCAGGS-neo to construct pCAGGS-F-neo. The resulting plasmid was transfected into Vero cells or LLC-MK2 cells using ViaFect (Promega), and selected using 1-2 mg/mL G418 disulfate solution (Nacalai Tesque) to express F gene. cells were obtained. The resulting cells are designated as Vero-F and LLC-MK2-F.
ACCESSION:AB855655のSeV-Z株の配列情報と、J. General Virology (1997), 78, 2813-2820.のpSeVの情報を基に、T7プロモーターでF遺伝子欠失型SeVゲノムが転写されるpSeV/dFを構築した。SeV-Z株の細胞傷害性を最小化するために、pSeV/dFに次のアミノ酸変異を加えた:Pタンパク質:511F、Mタンパク質:69E、116A、及び183S、HNタンパク質:262T、264R、及び461E、並びに、Lタンパク質:1197S、及び1796E(例えば、WO2003/025570参照)。得られたプラスミドをpSeV/TSdFとした。SeVの再構成を評価するために目的遺伝子(GOI)としてGFPの変異体であるEmGFPを用いた。GOIの搭載位置はN遺伝子の前(以下「+」と表される)、P遺伝子とM遺伝子の間(以下「PM」と表される)、M遺伝子とHN遺伝子の間(以下「MHN」と表される)、HN遺伝子とL遺伝子の間(以下「HNL」と表される)の順で遺伝子発現量が減少する。EmGFP遺伝子の搭載位置はSeVのN遺伝子の前とし、pSeV+EmGFP/TSdFを主に用いた。 (2) F gene-deleted SeV was produced as follows.
ACCESSION: The sequence information of the SeV-Z strain of AB855655 and the J. Phys. General Virology (1997), 78, 2813-2820. pSeV/dF, in which the F gene-deleted SeV genome is transcribed with a T7 promoter, was constructed based on the information of pSeV. To minimize the cytotoxicity of the SeV-Z strain, the following amino acid mutations were made in pSeV/dF: P protein: 511F, M protein: 69E, 116A, and 183S, HN proteins: 262T, 264R, and 461E and L proteins: 1197S and 1796E (see, eg, WO2003/025570). The resulting plasmid was named pSeV/TSdF. EmGFP, which is a GFP mutant, was used as a gene of interest (GOI) to evaluate SeV rearrangement. The GOI is installed in front of the N gene (hereinafter referred to as "+"), between the P gene and the M gene (hereinafter referred to as "PM"), and between the M gene and the HN gene (hereinafter referred to as "MHN"). ) and between the HN gene and the L gene (hereinafter referred to as “HNL”). The EmGFP gene was placed in front of the SeV N gene, and pSeV+EmGFP/TSdF was mainly used.
WO2005/071092を参考にpCAGGS-NP、pCAGGS-P4C(-)、pCAGGS-L、pCAGGS-F5R、pCAGGS-T7を構築し、この組み合わせを「CAG」と表記する。また、コザック配列の付加とヒトコドンへの最適化を行い、上記とは異なるプロモーターを備える再構成用プラスミドセット:pCAGGS-NPco、pCAGGS-P4C(-)co、pCAGGS-Lco、pCAGGS-F5Rco、pCAGGS-T7co、pEF1-NPco、pEF1-P4C(-)co、pEF1-Lco、pEF1-F5Rco、及びpEF1-T7coを構築した。さらに、T7にはP2001-54387Aを参考に430P、849I、880Y変異を導入し、P2003-61683Aを参考に644Y、667Y変異を導入し、得られたT7m配列を搭載するpCAGGS-T7mco、pEF1-T7mcoを構築した。pEF1-NPco、pEF1-P4C(-)co、pEF1-Lco、pCAGGS-F5Rco、pCAGGS-T7mcoの組み合わせを「EFnpL」と表記する。pEF1-NPco、pCAGGS-P4C(-)co、pCAGGS -Lco、pCAGGS-F5Rco、pCAGGS-T7mcoの組み合わせをEFnCAGpLと表記。pCAGGS-NPco、pCAGGS-P4C(-)co、pEF1-Lco、pCAGGS-F5Rco、pCAGGS-T7mcoの組み合わせをCAGnpEFLと表記する。 (3) A plasmid for SeV reconstitution was constructed as follows.
pCAGGS-NP, pCAGGS-P4C(-), pCAGGS-L, pCAGGS-F5R and pCAGGS-T7 were constructed with reference to WO2005/071092, and this combination is referred to as "CAG". In addition, a reconstruction plasmid set with a Kozak sequence added and optimized for human codons and having a promoter different from the above: pCAGGS-NPco, pCAGGS-P4C (-) co, pCAGGS-Lco, pCAGGS-F5Rco, pCAGGS- T7co, pEF1-NPco, pEF1-P4C(-)co, pEF1-Lco, pEF1-F5Rco, and pEF1-T7co were constructed. Furthermore, in T7, 430P, 849I, and 880Y mutations are introduced with reference to P2001-54387A, and 644Y and 667Y mutations are introduced with reference to P2003-61683A. built. The combination of pEF1-NPco, pEF1-P4C(-)co, pEF1-Lco, pCAGGS-F5Rco and pCAGGS-T7mco is denoted as "EFnpL". The combination of pEF1-NPco, pCAGGS-P4C(-)co, pCAGGS-Lco, pCAGGS-F5Rco and pCAGGS-T7mco is denoted as EFnCAGpL. A combination of pCAGGS-NPco, pCAGGS-P4C(-)co, pEF1-Lco, pCAGGS-F5Rco and pCAGGS-T7mco is denoted as CAGnpEFL.
ノンコーディングRNA評価用配列はT7プロモーターとT7ターミネーターを有するpT7プラスミドに搭載し、pT7-VAI(180bp;配列番号17)、pT7-VAI74a(180bp;配列番号18でV=A)、pT7-VAI74c(180bp;配列番号18でV=C)、pT7-VAI74a(330bp;配列番号26でM=A)、pT7-VAI-VAII(478bp;配列番号21)、pT7-nc886(108bp;配列番号13)、pT7-nc886(272bp;配列番号14)を構築した。VAIのApical Stem(図1)にあるBamHI認識配列の破壊のため、VAIの74塩基目に塩基置換(T74A、T74C)を有する配列を構築した。同様にVAIの3’側にあるNheI認識配列の破壊のため、191塩基目に塩基置換(G191C)を有する配列を構築した(配列番号26でM=A)。これらの塩基置換は、RNAの二次構造に影響を与えず、VAIの機能への影響はないと考えて設計したものである。別のPKR阻害因子としてnc886(108bp)を搭載したpT7プラスミドを構築した。その配列を延長するためにVAIの前後配列をそれぞれ前後にさらに有するnc886(272bp)を構築した(配列番号13,14)。コントロール用プラスミドとしてT7プロモーター下にIRES配列を有するpT7-IRESを構築した。 (4) A plasmid having a PKR inhibitor was constructed as follows.
The non-coding RNA evaluation sequence was mounted on a pT7 plasmid having a T7 promoter and a T7 terminator, pT7-VAI (180 bp; SEQ ID NO: 17), pT7-VAI74a (180 bp; V = A in SEQ ID NO: 18), pT7-VAI74c ( 180 bp; V=C in SEQ ID NO: 18), pT7-VAI74a (330 bp; M=A in SEQ ID NO: 26), pT7-VAI-VAII (478 bp; SEQ ID NO: 21), pT7-nc886 (108 bp; SEQ ID NO: 13), pT7-nc886 (272 bp; SEQ ID NO: 14) was constructed. In order to disrupt the BamHI recognition sequence in the Apical Stem of VAI (Fig. 1), a sequence having base substitutions (T74A, T74C) at the 74th base of VAI was constructed. Similarly, a sequence having a base substitution (G191C) at base 191 was constructed to disrupt the NheI recognition sequence on the 3' side of VAI (M=A in SEQ ID NO: 26). These base substitutions were designed on the assumption that they would not affect the secondary structure of RNA and would not affect the function of VAI. A pT7 plasmid was constructed carrying nc886 (108 bp) as another PKR inhibitor. In order to extend the sequence, nc886 (272 bp) having VAI sequences before and after each was constructed (SEQ ID NOS: 13, 14). As a control plasmid, pT7-IRES having an IRES sequence under the T7 promoter was constructed.
翻訳される配列には基本的にコザック配列の付加とヒトコドンへの最適化を行った。pCAGGS-E3L、pCAGGS-K3L、pCAGGS-Y3、pCAGGS-E3K3、pCAGGS-E3Y3、pCAGGS-NS1、pCAGGS-σ3、pCAGGS-Us11を構築した。E3L(配列番号7)およびK3L(配列番号10)はワクシニアウイルスの配列、Y3(配列番号27)はSeVのCタンパク質のC末端側106アミノ酸配列、NS1(配列番号28)はインフルエンザウイルスの配列、σ3(配列番号8)はレオウイルスの配列、Us11(配列番号29)はHSV-1の配列、E3K3(配列番号30)はE3LのC末端側107アミノ酸配列とK3Lの融合配列、E3Y3(配列番号31)はE3LのC末端側107アミノ酸配列とY3の融合配列であった。 (5) A plasmid having a PKR inhibitor was constructed as follows.
The translated sequences were basically added with Kozak sequences and optimized for human codons. pCAGGS-E3L, pCAGGS-K3L, pCAGGS-Y3, pCAGGS-E3K3, pCAGGS-E3Y3, pCAGGS-NS1, pCAGGS-σ3, pCAGGS-Us11 were constructed. E3L (SEQ ID NO: 7) and K3L (SEQ ID NO: 10) are vaccinia virus sequences, Y3 (SEQ ID NO: 27) is the C-terminal 106 amino acid sequence of SeV C protein, NS1 (SEQ ID NO: 28) is the influenza virus sequence, σ3 (SEQ ID NO: 8) is a reovirus sequence, Us11 (SEQ ID NO: 29) is an HSV-1 sequence, E3K3 (SEQ ID NO: 30) is a fusion sequence between the C-terminal 107 amino acid sequence of E3L and K3L, E3Y3 (SEQ ID NO: 31) was a fusion sequence between the C-terminal 107 amino acid sequence of E3L and Y3.
SeVの再構成用プラスミドとトランスフェクション試薬比率はWO2005/071092に従った。具体的には、以下の重量のプラスミドとトランスフェクション試薬(TransIT-LT1 ReagentまたはViaFect)を混合してプラスミドミックスを得た。 (6) SeV Reconstitution in the Presence or Absence of a PKR Inhibitor The ratio of SeV reconstitution plasmid to transfection reagent was in accordance with WO2005/071092. Specifically, plasmids and transfection reagents (TransIT-LT1 Reagent or ViaFect) of the following weights were mixed to obtain a plasmid mix.
NP、P4C(-)、F5R、T7:各0.5μg
L:2μg
pSeV:5μg
プラスミドの合計:9μg
TransIT-LT1 ReagentまたはViaFect:15μL Conditions without PKR inhibitors:
NP, P4C (-), F5R, T7: 0.5 μg each
L: 2 μg
pSeV: 5 μg
Total plasmid: 9 μg
TransIT-LT1 Reagent or ViaFect: 15 μL
NP、P4C(-)、F5R、T7:各0.5μg
L:2μg
pSeV:5μg
PKR阻害因子を有するプラスミド:1μg
プラスミドの合計:10μg
TransIT-LT1 ReagentまたはViaFect:16.5μL Conditions with PKR inhibitors:
NP, P4C (-), F5R, T7: 0.5 μg each
L: 2 μg
pSeV: 5 μg
Plasmid with PKR inhibitor: 1 μg
Total plasmid: 10 μg
TransIT-LT1 Reagent or ViaFect: 16.5 μL
SeVの再構成用細胞としてはLLC-MK2-Fのみを含む細胞集団を用いた。SeV再構成用のプラスミドはCAGnpEFLを用いた。pSeVはpSeV+EmGFP/TSdFを用いた。PKR阻害因子としてVAIを用いた。VAIは野生型(wt)の配列としてpT7-VAI(180bp)、pT7-VAI-VAII(478bp)を用い、塩基置換配列としてpT7-VAI74a(180bp)、pT7-VAI74c(180bp)、pT7-VAI74a(330bp)を用いた。VAIのコントロール(Ctrl)プラスミドとしてpT7-IRESを用いた。VAIを併用した細胞ではコントロールとは異なり、トランスフェクションの翌日からEmGFPの蛍光陽性細胞が観察された。3日目の細胞からのEmGFP由来の蛍光強度を比較すると、VAI(180bp)wt存在下でコントロールの18倍、VAI(180bp)74a存在下でコントロールの34倍、VAI(180bp)74c存在下でコントロールの53倍、VAI-VAII存在下でコントロールの63倍、VAI(330bp)74a存在下でコントロールの146倍であり、VAIを併用することでEmGFP陽性細胞が顕著に増加した(図2)。SeV再構成開始から3日目の培養上清のVero細胞への感染力価は、VAI(180bp)wt存在下でコントロールの68倍、VAI(180bp)74a存在下でコントロールの139倍、VAI(180bp)74c存在下でコントロールの282倍、VAI-VAII存在下でコントロールの476倍、 VAI(330bp)74a存在下でコントロールの1962倍であった(図3)。このようにVAIは、SeVの再構成効率を顕著に高めることが明らかである。 (7) SeV Reconstitution in the Presence of VAI A cell population containing only LLC-MK2-F was used as SeV reconstitution cells. CAGnpEFL was used as a plasmid for SeV reconstruction. pSeV used pSeV+EmGFP/TSdF. VAI was used as a PKR inhibitor. VAI uses pT7-VAI (180 bp) and pT7-VAI-VAII (478 bp) as wild-type (wt) sequences, and pT7-VAI74a (180 bp), pT7-VAI74c (180 bp) and pT7-VAI74a ( 330 bp) was used. pT7-IRES was used as a control (Ctrl) plasmid for VAI. In the cells combined with VAI, unlike the control, EmGFP fluorescence-positive cells were observed from the day after transfection. Comparing the fluorescence intensity from EmGFP from
SeVの再構成用細胞としてはLLC-MK2-Fのみを含む細胞集団を用いた。SeV再構成用のプラスミドはCAGnpEFLを用いた。pSeVはpSeV+EmGFP/TSdFを用いた。PKR阻害因子を含むプラスミドとして、pT7-nc886(108bp)、pT7-nc886(272bp)、pT7-VAI74a(330bp)を用いた。 (8) SeV Reconstitution in the Presence of nc886 A cell population containing only LLC-MK2-F was used as SeV reconstitution cells. CAGnpEFL was used as a plasmid for SeV reconstruction. pSeV used pSeV+EmGFP/TSdF. As plasmids containing PKR inhibitors, pT7-nc886 (108 bp), pT7-nc886 (272 bp) and pT7-VAI74a (330 bp) were used.
SeVの再構成用細胞としてはLLC-MK2-Fのみを含む細胞集団またはVero-Fのみを含む細胞を用いた。SeV再構成用のプラスミドとしてはCAGnpEFLを用いた。pSeVとしてはpSeV+EmGFP/TSdFを用いた。PKR阻害プラスミドとしてはpT7-VAI74a(330bp)、pCAGGS-E3L、pCAGGS-K3L、pCAGGS-NS1、pCAGGS-σ3、pCAGGS-Us11、及びpCAGGS-Y3のいずれかを用いた。再構成後3日目の細胞からのEmGFP由来の蛍光強度を測定した。図5に示されるように、コントロールと比較してすべての試験群において細胞からのEmGFP由来の蛍光強度が上昇した。コントロールと比較して、LLC-MK2-F細胞でSeV再構成効率を100倍以上向上させ、かつVERO-F細胞でSeV再構成効率を10倍以上向上させたのはVAI、E3L、σ3、及びUs11であった(図5)。また、図6に示されるように、コントロールと比較してすべての試験群において感染力価が上昇した。力価測定において、LLC-MK2-FおよびVero-Fの両方の細胞で高い値を示したのはVAI、E3L、σ3、及びUs11であった(図6)。 (9) Reconstitution of SeV in the Presence of PKR-Inhibiting Viral Factor Cells containing only LLC-MK2-F or cells containing only Vero-F were used as cells for SeV reconstitution. CAGnpEFL was used as a plasmid for SeV reconstruction. pSeV+EmGFP/TSdF was used as pSeV. Any one of pT7-VAI74a (330 bp), pCAGGS-E3L, pCAGGS-K3L, pCAGGS-NS1, pCAGGS-σ3, pCAGGS-Us11, and pCAGGS-Y3 was used as the PKR-inhibiting plasmid. Fluorescence intensity derived from EmGFP from
SeVの再構成用細胞としてはLLC-MK2-Fのみを含む細胞集団またはVero-Fのみを含む細胞を用いた。SeV再構成用のプラスミドとしてはCAGnpEFLを用いた。pSeVとしてはpSeV+EmGFP/TSdFを用いた。PKR阻害プラスミドとしてはpCAGGS-E3L、pCAGGS-K3L、pCAGGS-E3K3、pCAGGS-E3Y3、及びpCAGGS-Y3のいずれかを用いた。再構成後3日目の細胞からのEmGFP由来の蛍光強度を測定した。すると、図7に示されるように、コントロールと比較してすべての試験群において細胞からのEmGFP由来の蛍光強度が上昇した。また、E3K3に比べてE3Y3の方がSeV再構成効率を向上させた(図7)。また、SeV再構成用のプラスミドとしてEFnpLを用い、感染後3日目のSeV再構成効率を比較すると、LLC-MK2-F細胞でE3Lに比べてE3Y3の方が3.5倍、Vero-F細胞でE3Lに比べてE3Y3の方が6.8倍の向上が認められた。 (10) Reconstitution of SeV in the Presence of Fusion Sequence A cell population containing only LLC-MK2-F or a cell containing only Vero-F was used as SeV reconstitution cells. CAGnpEFL was used as a plasmid for SeV reconstruction. pSeV+EmGFP/TSdF was used as pSeV. Any one of pCAGGS-E3L, pCAGGS-K3L, pCAGGS-E3K3, pCAGGS-E3Y3, and pCAGGS-Y3 was used as the PKR-inhibiting plasmid. Fluorescence intensity derived from EmGFP from
Vero-F細胞にpCAGGS-E3L-Hyg、又はpCAGGS-E3Y3-Hygをトランスフェクションし、500μg/mLハイグロマイシンB(ナカライテスク)を用いて細胞を選択し、それぞれE3L及びE3Y3を恒常的に発現する安定株であるVero-F-E3L、及びVero-F-E3Y3細胞を得た。これらの細胞にSeV再構成用プラスミドpEF1-NPco、pEF1-P4C(-)co、pEF1-Lco、pCAGGS-F5Rco、pCAGGS-T7mcoの組み合わせ(EFnpL)とpSeV+EmGFP/TSdFを用いた。再構成後3日目の細胞からのEmGFP由来の蛍光強度を測定した。Vero-F-E3Y3細胞においてSeV再構成効率の2倍の向上が観察された。 (11) Reconstitution of SeV using cells constitutively expressing PKR inhibitor Vero-F cells were transfected with pCAGGS-E3L-Hyg or pCAGGS-E3Y3-Hyg, and 500 μg/mL hygromycin B (Nacalai Cells were selected using Tesk) to obtain Vero-F-E3L and Vero-F-E3Y3 cells, stable lines that constitutively express E3L and E3Y3, respectively. A combination of SeV reconstitution plasmids pEF1-NPco, pEF1-P4C(-)co, pEF1-Lco, pCAGGS-F5Rco and pCAGGS-T7mco (EFnpL) and pSeV+EmGFP/TSdF were used in these cells. Fluorescence intensity derived from EmGFP from
従来技術と比較を行うためにCAGプロモーターとEF1プロモーターの組み合わせを検討した。細胞はLLC-MK2-FおよびVero-Fを用いた。pSeVとしてはpSeV+EmGFP/TSdFを用いた。PKR阻害因子としてはE3Y3を用いた。N、P、LすべてをCAGプロモーターからドライブするCAG;N、P、LすべてをEF1αプロモーターからドライブするEFnpL;NをEF1αプロモーターからドライブし、PとLをCAGプロモーターからドライブするEFnCAGpL;及びNとPをCAGプロモーターからドライブし、LをEF1αプロモーターからドライブするCAGnpEFLの組合せでプロモーターの違いによるSeV再構成功率の影響を調べた。再構成後3日目の細胞からのEmGFP由来の蛍光強度を測定した。 (12) Comparison of promoters for expression A combination of the CAG promoter and the EF1 promoter was examined for comparison with the prior art. LLC-MK2-F and Vero-F cells were used. pSeV+EmGFP/TSdF was used as pSeV. E3Y3 was used as a PKR inhibitor. CAG with all N, P, L driven from the CAG promoter; EFnpL with all N, P, L driven from the EF1α promoter; EFnCAGpL with N driven from the EF1α promoter and P and L from the CAG promoter; In the combination of CAGnpEFL in which P is driven from the CAG promoter and L is driven from the EF1α promoter, the effect of different promoters on SeV reconstitution efficiency was investigated. Fluorescence intensity derived from EmGFP from
SeVの再構成用細胞としてはLLC-MK2-Fのみを含む細胞集団またはVero-Fのみを含む細胞集団を用いた。pSeVとしてはpSeV+EmGFP/TSdFを用いた。PKR阻害因子としてはVAIおよびE3Y3を用いた。SeV再構成用のプラスミドとしてはLLC-MK2-Fに対してCAGnpEFLを用い、Vero-Fに対してCAGnpEFLおよびEFnpLを用いた。その結果、図10に示されるように、PKR阻害因子を組み合わせることで、PKR阻害因子非存在のコントロールと比較して、1000倍以上にSeVの再構成効率が向上した。 (13) Reconstitution of SeV in the Presence of a Combination of PKR Inhibitors As cells for reconstitution of SeV, a cell population containing only LLC-MK2-F or a cell population containing only Vero-F was used. pSeV+EmGFP/TSdF was used as pSeV. VAI and E3Y3 were used as PKR inhibitors. As plasmids for SeV reconstruction, CAGnpEFL was used for LLC-MK2-F, and CAGnpEFL and EFnpL were used for Vero-F. As a result, as shown in FIG. 10, the combination of PKR inhibitors improved the SeV reconstitution efficiency more than 1000-fold compared to the control without PKR inhibitors.
PKR阻害因子をコードする遺伝子を搭載するSeVに関して、SeV再構成効率を評価した。細胞はLLC-MK2-Fのみを含む細胞集団を用いた。SeV再構成用のプラスミドとしてはCAGnpEFLを用いた。pSeVとしてはpSeV(PM)EmGFP/TSdF、pSeV(PM)EmGFP-VAI74a/TSdF(VAI(180bp)74aを搭載する)、pSeV(PM)EmGFP-VAI74aL/TSdF(VAI(330bp)74aを搭載する)を用いた。EmGFP-VAI74aは、配列番号32に示される通りの配列を有した。EmGFP-VAI74aLは、配列番号33に示される通りの配列を有した。 (14) Reconstitution of SeV carrying a PKR inhibitor SeV carrying a gene encoding a PKR inhibitor was evaluated for SeV reconstitution efficiency. A cell population containing only LLC-MK2-F was used. CAGnpEFL was used as a plasmid for SeV reconstruction. pSeV includes pSeV(PM)EmGFP/TSdF, pSeV(PM)EmGFP-VAI74a/TSdF (loaded with VAI (180bp)74a), and pSeV(PM)EmGFP-VAI74aL/TSdF (loaded with VAI(330bp)74a). was used. EmGFP-VAI74a had the sequence as shown in SEQ ID NO:32. EmGFP-VAI74aL had the sequence as shown in SEQ ID NO:33.
SeVの再構成用細胞としてはLLC-MK2-Fのみを含む細胞集団を用いた。SeV再構成用のプラスミドはCAGnpEFLを用いた。pSeVはpSeV+EmGFP/TSdFを用いた。PKR阻害因子を含むプラスミドとして、pT7-VAI(180bp)74c、pT7-VAI(264bp)74c3p、pT7-VAI(246bp)74c5p、pT7-VAI(330bp)74cを用いた。VAI(264bp)74c3p(配列番号34)は、VAI(180bp)74cの3’側に対して、VAIの3’側の84merを追加したものである。また、VAI(246bp)74c5p(配列番号35)は、VAI(180bp)74cの5’側に対して、VAIの5’側の86merを追加したものである。 (14-2) Effect of addition of 5' or 3' sequence of the sequence on VAI (180 bp) 74c A cell population containing only LLC-MK2-F was used as SeV reconstitution cells. CAGnpEFL was used as a plasmid for SeV reconstruction. pSeV used pSeV+EmGFP/TSdF. As plasmids containing PKR inhibitors, pT7-VAI (180 bp) 74c, pT7-VAI (264 bp) 74c3p, pT7-VAI (246 bp) 74c5p, and pT7-VAI (330 bp) 74c were used. VAI (264 bp) 74c3p (SEQ ID NO: 34) is obtained by adding an 84-mer on the 3' side of VAI to the 3' side of VAI (180 bp) 74c. In addition, VAI (246 bp) 74c5p (SEQ ID NO: 35) is obtained by adding an 86-mer on the 5' side of VAI to the 5' side of VAI (180 bp) 74c.
SeVの再構成用細胞としてはLLC-MK2-Fのみを含む細胞集団を用いた。SeV再構成用のプラスミドはCAGnpEFLを用いた。pSeVはpSeV+EmGFP/TSdFを用いた。PKR阻害因子を含むプラスミドとして、pT7-EBER(337bp)を用いた。このプラスミドでは、EBER1の前後にVAIの前後配列がそれぞれ導入されている。再構成後3日目の細胞からのEmGFP由来の蛍光強度を比較すると、EBER1(337bp)存在下でコントロールの3.8倍であった。 (15) Effect of EBER1 Integration on Viral Growth A cell population containing only LLC-MK2-F was used as SeV reconstitution cells. CAGnpEFL was used as a plasmid for SeV reconstruction. pSeV used pSeV+EmGFP/TSdF. As a plasmid containing a PKR inhibitor, pT7-EBER (337 bp) was used. In this plasmid, sequences before and after VAI are introduced before and after EBER1, respectively. Comparing the fluorescence intensity derived from EmGFP from
SeVの再構成用細胞としてはVero-Fのみを含む細胞集団、あるいはクローニングしたVero-F-E3Y3のみを含む細胞集団を用いた。SeV再構成用のプラスミドはCAGnpEFLを用いた。pSeVはpSeV+EmGFP/TSdF、あるいはT7プロモーター配列下にハンマーヘッドリボザイム配列(配列番号36)を有するpSeV+EmGFP/TSdF(Hh)を用いた。再構成後3日目の細胞からのEmGFP由来の蛍光強度を比較すると、pSeV+EmGFP/TSdF(コントロール:Ctrl)を用いたVero-F細胞ではEmGFP陽性細胞が観察されなかったのに対し、Vero-F-E3Y3細胞ではEmGFP陽性細胞が観察された。図15に示されるように、pSeV+EmGFP/TSdF(Hh)を用いたVero-F-E3Y3細胞ではVero-F細胞と比較し、EmGFPの蛍光強度が37.7倍であった。 (17) Introduction of Hammerhead Ribozyme Sequence A cell population containing only Vero-F or a cell population containing only cloned Vero-F-E3Y3 was used as SeV reconstitution cells. CAGnpEFL was used as a plasmid for SeV reconstruction. As pSeV, pSeV+EmGFP/TSdF or pSeV+EmGFP/TSdF(Hh) having a hammerhead ribozyme sequence (SEQ ID NO: 36) under the T7 promoter sequence was used. Comparing the fluorescence intensity derived from EmGFP from cells on
L遺伝子増幅用のフォワードプライマー: TGGGTCATTCCCTGACCAGA(配列番号39)
L遺伝子増幅用のリバースプライマー : CAGCTTCGATCGTTCTGCAC(配列番号40)
VAI増幅用のフォワードプライマー : ATCGAGCCTTATGACAGC(配列番号41)
VAI増幅用のリバースプライマー : GATACCCTTGCGAATTTATCCACC(配列番号42) VAI (330 bp) 74c was integrated into the SeV genome obtained using the following primer set (L primer) that amplifies the L gene of the SeV genome and a primer set (Hv primer) that amplifies VAI (330 bp) 74c. We considered whether or not
Forward primer for L gene amplification: TGGGTCATTCCCTGACCAGA (SEQ ID NO: 39)
Reverse primer for L gene amplification: CAGCTTCGATCGTTCTGCAC (SEQ ID NO: 40)
Forward primer for VAI amplification: ATCGAGCCTTATGACAGC (SEQ ID NO: 41)
Reverse primer for VAI amplification: GATACCCTTGCGAATTTATCCACC (SEQ ID NO: 42)
上記(17)は、SeVゲノムをコードする遺伝子を搭載したプラスミドへのVAI(330bp)74cの導入を記述した。本実施例では、SeVを再構成するためのSeV粒子の構成要素を発現するプラスミドに対してVAI(330bp)74cを導入した。具体的には以下の通りに再構成実験を実施した。 (18) Introduction of VAI (330 bp) 74c into a plasmid for SeV reconstitution The above (17) described introduction of VAI (330 bp) 74c into a plasmid carrying a gene encoding the SeV genome. In this example, VAI (330 bp) 74c was introduced into a plasmid expressing the components of the SeV particle for reconstituting SeV. Specifically, a reconstruction experiment was performed as follows.
上記(18)に対して、さらにE3Y3を追加導入した条件で実験を行った。pSeVとしてはpSeV+EmGFP/TSdF(コントロール)、およびpSeV+EmGFP/TSdF(Hv)を用いた。再構成後3日目の細胞からのEmGFP由来の蛍光強度を比較すると、図19に示されるようにHv+vCAGnpEFL-mix+E3Y3はコントロールの2,836倍であった。得られた培養上清の感染力価を比較すると、図20に示されるように、Hv+vCAGnpEFL-mix+E3Y3はコントロールの29,925倍であった。なお、F5RとE3Y3は再構成時に用いなくても、SeVの再構成は可能であった。 (19) Introduction of VAI (330 bp) 74c into SeV Reconstitution Plasmid An experiment was performed under the conditions of (18) above, in which E3Y3 was additionally introduced. As pSeV, pSeV+EmGFP/TSdF (control) and pSeV+EmGFP/TSdF (Hv) were used. Comparing the fluorescence intensity derived from EmGFP from
T7プロモーター以外にCAGプロモーターもしくはEF1プロモーターで作動させるSeVゲノムプラスミドを構築した(図21A参照)。CAGプロモーターを有するSeVゲノムプラスミドをpCAGGS-SeVと表記し、EF1プロモーターを有するSeVゲノムプラスミドをpEF1-SeVと表記する。再構成用の細胞としては、LLC-MK2-Fのみを含む細胞集団を用いた。SeV再構成用のプラスミドとしては、CAGnpEFLを用いた。SeVゲノムプラスミドとしては、pSeV+EmGFP/TSdF(Hv)、pCAG-SeV+EmGFP/TSdF(Hv)、またはpEF1-SeV+EmGFP/TSdF(Hv)を用いた。再構成後3日目の細胞からのEmGFP由来の蛍光強度を比較すると、図21Bに示されるように、pCAG-SeVはコントロール(pSeV)の1.44倍、pEF1-SeVは1.6倍であった。 (20) Other vector constructions A SeV genome plasmid driven by a CAG promoter or an EF1 promoter in addition to the T7 promoter was constructed (see Fig. 21A). The SeV genomic plasmid with the CAG promoter is denoted as pCAGGS-SeV, and the SeV genomic plasmid with the EF1 promoter is denoted as pEF1-SeV. A cell population containing only LLC-MK2-F was used as cells for reconstitution. CAGnpEFL was used as a plasmid for SeV reconstruction. As the SeV genome plasmid, pSeV+EmGFP/TSdF (Hv), pCAG-SeV+EmGFP/TSdF (Hv), or pEF1-SeV+EmGFP/TSdF (Hv) was used. Comparing the fluorescence intensity derived from EmGFP from
ムンプスウイルス(MuV;パラミクソウイルス科ルブラウイルス属)の再構成用細胞としてはLLC-MK2のみを含む細胞集団を用いた。MuV再構成用のプラスミドとしてはMuV-mixを用いた。MuV-mixは、以下のプラスミドを含んだ:pCAGGS-MuV-N、pCAGGS-MuV-P、pCAGGS-MuV-L、pCAGGS-T7mco。pMuVとしてはpMuV+EmGFP/miniを用いた。PKR阻害因子を含むプラスミドとしてpT7-VAI(330bp)74cを用いた。MuVゲノムの参考配列は、Accession:KY295913に登録された配列であった。MuVミニゲノムは、上記参考配列からリーダー配列とトレイラー配列の間を全て除去して作製された。 (21) Paramyxovirus reconstitution experiment other than SeV (MuV)
As cells for reconstitution of mumps virus (MuV; family of Paramyxoviridae, genus Rubulavirus), a cell population containing only LLC-MK2 was used. MuV-mix was used as a plasmid for MuV reconstruction. MuV-mix contained the following plasmids: pCAGGS-MuV-N, pCAGGS-MuV-P, pCAGGS-MuV-L, pCAGGS-T7mco. pMuV+EmGFP/mini was used as pMuV. As a plasmid containing a PKR inhibitor, pT7-VAI (330 bp)74c was used. The reference sequence of the MuV genome was the sequence registered under Accession: KY295913. The MuV minigenome was generated by removing everything between the leader and trailer sequences from the above reference sequence.
pMuV+EmGFP/mini
pCAGGS-MuV-N
pCAGGS-MuV-P
pCAGGS-MuV-L
pCAGGS-T7mco In summary, the following plasmids were used for MuV reconstitution.
pMuV+EmGFP/mini
pCAGGS-MuV-N
pCAGGS-MuV-P
pCAGGS-MuV-L
pCAGGS-T7mco
麻疹ウイルス(MeV;パラミクソウイルス科モルビリウイルス属)の再構成用細胞としてはLLC-MK2のみを含む細胞集団を用いた。MeV再構成用のプラスミドとしてはMeV-mixを用いた。MeV-mixは、以下のプラスミドを含んだ:pCAGGS-MeV-N、pCAGGS-MeV-P、pCAGGS-MeV-L、pCAGGS-T7mco。pMeVとしてはpMeV+EmGFP/miniを用いた。PKR阻害因子を含むプラスミドとしてpT7-VAI(330bp)74cを用いた。MeVの参考配列は、Accession:KY295921に登録された配列であった。MeVのミニゲノムは、上記参考配列からリーダー配列とトレイラー配列の間を全て除去して作製された。 (22) Paramyxovirus reconstitution experiment other than SeV (MeV)
As cells for reconstitution of measles virus (MeV; genus Morbillivirus, family Paramyxoviridae), a cell population containing only LLC-MK2 was used. MeV-mix was used as a plasmid for MeV reconstruction. MeV-mix contained the following plasmids: pCAGGS-MeV-N, pCAGGS-MeV-P, pCAGGS-MeV-L, pCAGGS-T7mco. pMeV+EmGFP/mini was used as pMeV. As a plasmid containing a PKR inhibitor, pT7-VAI (330 bp)74c was used. The reference sequence of MeV was the sequence registered under Accession: KY295921. The MeV minigenome was constructed by removing everything between the leader and trailer sequences from the above reference sequence.
pMeV+EmGFP/mini
pCAGGS-MeV-N
pCAGGS-MeV-P
pCAGGS-MeV-L
pCAGGS-T7mco
pT7-VAI(330)74c In summary, the following plasmids were used in the reconstitution of MeV.
pMeV+EmGFP/mini
pCAGGS-MeV-N
pCAGGS-MeV-P
pCAGGS-MeV-L
pCAGGS-T7mco
pT7-VAI(330)74c
水疱性口内炎ウイルス(VSV;ラブドウイルス科ベシクロウイルス属)の再構成用細胞としては、LLC-MK2のみを含む細胞集団を用いた。VSVの再構成にはVSV-mix(pCAGGS-VSV-N、pCAGGS-VSV-P、pCAGGS-VSV-L、およびpCAGGS-T7mcoを含む)を用いた。VSVゲノムプラスミドとしてはpVSV-ΔG-GFP-2.6(Kerafast社)を用いた。PKR阻害因子としてはpCAGGS-E3Y3を用いた。 (23) Paramyxovirus reconstitution experiment (VSV) other than SeV
As cells for reconstitution of vesicular stomatitis virus (VSV; family Rhabdoviridae, genus Vesiculovirus), a cell population containing only LLC-MK2 was used. VSV-mix (including pCAGGS-VSV-N, pCAGGS-VSV-P, pCAGGS-VSV-L, and pCAGGS-T7mco) was used for VSV reconstruction. As the VSV genome plasmid, pVSV-ΔG-GFP-2.6 (Kerafast) was used. pCAGGS-E3Y3 was used as a PKR inhibitor.
以下では、pCAGGS-NPco(SeV)、 pCAGGS-P4C(-)co(SeV)、 pEF1-Lco(SeV)、 pCAGGS-T7mcoを含むSeV再構成用のプラスミド混合物を「SeV-mix」と表記する。また、pCAGGS-MeV-N、 pCAGGS-MeV-P、 pCAGGS-MeV-L、 pCAGGS-T7mcoを含むMeV再構成用のプラスミド混合物を「MeV-mix」と表記する。さらに、pCAGGS-MuV-N、 pCAGGS-MuV-P、 pCAGGS-MuV-L、 pCAGGS-T7mcoを含むMuV再構成用のプラスミド混合物を「MuV-mix」と表記する。 (24) Reconstitution of SeV, MeV, and MuV using heterologous RNA polymerase The following includes pCAGGS-NPco (SeV), pCAGGS-P4C (-) co (SeV), pEF1-Lco (SeV), and pCAGGS-T7mco The plasmid mixture for SeV reconstitution is designated as "SeV-mix". A plasmid mixture for MeV reconstruction containing pCAGGS-MeV-N, pCAGGS-MeV-P, pCAGGS-MeV-L and pCAGGS-T7mco is referred to as "MeV-mix". Furthermore, a plasmid mixture for MuV reconstruction containing pCAGGS-MuV-N, pCAGGS-MuV-P, pCAGGS-MuV-L and pCAGGS-T7mco is referred to as "MuV-mix".
VSVの再構成用の細胞としては、LLC-MK2のみを含む細胞集団を用いた。VSVの再構成にはSeV-mixを用いた。VSVゲノムプラスミドとしてはpVSV-ΔG-GFP-2.6(Kerafast社)を用いた。PKR阻害因子としては、pCAGGS-E3Y3を用いた。 (25) Construction of VSV Using Heterologous RNA Polymerase A cell population containing only LLC-MK2 was used as cells for reconstitution of VSV. SeV-mix was used for reconstruction of VSV. As the VSV genome plasmid, pVSV-ΔG-GFP-2.6 (Kerafast) was used. As a PKR inhibitor, pCAGGS-E3Y3 was used.
配列番号1:EF1αプロモーターの配列の例
配列番号2:CAGプロモーターの配列の例
配列番号3:EmGFPをコードする遺伝子の配列の例
配列番号4:EBウイルスのEBERの配列
配列番号5:HIVのTARの配列
配列番号6:ポリオウイルスの2Apro
配列番号7:ワクシニアウイルスのE3L
配列番号8:レオウイルスのσ3
配列番号9:ヒトp58IPK
配列番号10:ワクシニアウイルスのK3L
配列番号11:HIVのTat
配列番号12:単純ヘルペスウイルスのICP34.5
配列番号13:nc866
配列番号14:nc866のロングバージョン
配列番号15:NS5A
配列番号16:NS5A(1~148)
配列番号17:VAI(180mer)
配列番号18:VAI(c.74U>V)
配列番号19:VAI(330mer)
配列番号20:VAI(330mer;c.74U>V)
配列番号21:VAI-VAII
配列番号22:VAI(180mer:c.74U>M)
配列番号23:VAI(330mer:c.74U>M)
配列番号24:VAI(330mer;c.191C>D)
配列番号25:VAI(330mer;c.74U>V、c.191C>D)
配列番号26:VAI(330mer;c.74U>M、c.191C>G)
配列番号27:センダイウイルスのCタンパク質のC末端106アミノ酸
配列番号28:インフルエンザウイルスのNS1
配列番号29:単純ヘルペスウイルスのUs11
配列番号30:融合タンパク質E3K3
配列番号31:融合タンパク質E3Y3
配列番号32:EmGFP-VAI(74U>A)
配列番号33:EmGFP-VAI74aL(74U>A)
配列番号34:VAI(264bp)74c3p
配列番号35:VAI(246bp)74c5p
配列番号36:Hh-Rbzの配列の一例
配列番号37:HDV-Rbzの配列の一例
配列番号38:T7ターミネーター配列の一例
配列番号39:L遺伝子増幅用のフォワードプライマー
配列番号40:L遺伝子増幅用のリバースプライマー
配列番号41:VAI増幅用のフォワードプライマー
配列番号42:VAI増幅用のリバースプライマー Description of Sequence Listing SEQ ID NO: 1: Example of sequence of EF1α promoter SEQ ID NO: 2: Example of sequence of CAG promoter SEQ ID NO: 3: Example of sequence of gene encoding EmGFP SEQ ID NO: 4: Sequence of EBER of EB virus SEQ ID NO: 5 : Sequence of TAR of HIV SEQ ID NO: 6: 2A pro of poliovirus
SEQ ID NO: 7: E3L of vaccinia virus
SEQ ID NO: 8: Reovirus σ3
SEQ ID NO:9: Human p58 IPK
SEQ ID NO: 10: K3L of vaccinia virus
SEQ ID NO: 11: HIV Tat
SEQ ID NO: 12: ICP34.5 of herpes simplex virus
SEQ ID NO: 13: nc866
SEQ ID NO: 14: long version of nc866 SEQ ID NO: 15: NS5A
SEQ ID NO: 16: NS5A (1-148)
SEQ ID NO: 17: VAI (180mer)
SEQ ID NO: 18: VAI (c.74U>V)
SEQ ID NO: 19: VAI (330mer)
SEQ ID NO: 20: VAI (330mer; c.74U>V)
SEQ ID NO:21: VAI-VAII
SEQ ID NO: 22: VAI (180mer: c.74U>M)
SEQ ID NO: 23: VAI (330mer: c.74U>M)
SEQ ID NO: 24: VAI (330mer; c.191C>D)
SEQ ID NO: 25: VAI (330mer; c.74U>V, c.191C>D)
SEQ ID NO: 26: VAI (330mer; c.74U>M, c.191C>G)
SEQ ID NO: 27: C-terminal 106 amino acids of C protein of Sendai virus SEQ ID NO: 28: NS1 of influenza virus
SEQ ID NO: 29: Us11 of herpes simplex virus
SEQ ID NO: 30: Fusion protein E3K3
SEQ ID NO: 31: fusion protein E3Y3
SEQ ID NO: 32: EmGFP-VAI (74U>A)
SEQ ID NO: 33: EmGFP-VAI74aL (74U>A)
SEQ ID NO: 34: VAI (264 bp) 74c3p
SEQ ID NO: 35: VAI (246 bp) 74c5p
SEQ ID NO: 36: Example of Hh-Rbz sequence SEQ ID NO: 37: Example of HDV-Rbz sequence SEQ ID NO: 38: Example of T7 terminator sequence SEQ ID NO: 39: Forward primer for L gene amplification SEQ ID NO: 40: L gene amplification SEQ ID NO: 41: forward primer for VAI amplification SEQ ID NO: 42: reverse primer for VAI amplification
Claims (14)
- マイナス鎖RNAウイルスまたはウイルスベクターを製造する方法であって、
制御配列に作動可能に連結したプロテインキナーゼR(PKR)阻害性の因子をコードする遺伝子から当該因子を発現させてパッケージング細胞に供給することと、
パッケージング細胞にマイナス鎖RNAウイルスまたはウイルスベクターのゲノムRNAを発現させ、前記因子の存在下でマイナス鎖RNAウイルスまたはウイルスベクターを形成させることと、
形成されたマイナス鎖RNAウイルスまたはウイルスベクターを回収することと、
を含み、
PKR阻害性の因子は、PKR阻害性のウイルス性因子であるか、または、nc886もしくはp58IPKであり、
前記ウイルスまたはウイルスベクターと前記PKR阻害性の因子との関係が異種である、および/または、前記制御配列と前記PKR阻害性の因子との関係が異種である、
方法。 A method for producing a negative-strand RNA virus or viral vector, comprising:
expressing a protein kinase R (PKR) inhibitory factor from a gene encoding the factor operably linked to regulatory sequences and supplying the factor to packaging cells;
expressing the genomic RNA of a negative-strand RNA virus or viral vector in a packaging cell to form a negative-strand RNA virus or viral vector in the presence of said factor;
recovering the formed negative-strand RNA virus or viral vector;
including
the PKR-inhibiting factor is a PKR-inhibiting viral factor or nc886 or p58 IPK ;
the relationship between said virus or viral vector and said PKR-inhibitory agent is heterologous, and/or the relationship between said regulatory sequence and said PKR-inhibitory agent is heterologous;
Method. - マイナス鎖RNAウイルスまたはウイルスベクターが、センダイウイルスベクターである、請求項1に記載の方法。 The method according to claim 1, wherein the negative-strand RNA virus or viral vector is a Sendai virus vector.
- 前記PKR阻害性の因子が、アデノウイルスのVAI RNA、EBウイルスのEBER、HIVウイルスのTAR、ポリオウイルスの2Apro、ワクシニアウイルスのE3L、レオウイルスのδ3、インフルエンザウイルスのNS1、ヒトp58IPK、C型肝炎ウイルスのNS5A、ワクシニアウイルスのK3L、HIVウイルスのTat、ヒトnc886、単純ヘルペスウイルスのUs11、および単純ヘルペスウイルスのICP34.5、並びにこれらのオーソログからなる群から選択される1以上である、請求項1または2に記載の方法。 The PKR inhibitory factor is adenovirus VAI RNA, EB virus EBER, HIV virus TAR, poliovirus 2A pro , vaccinia virus E3L, reovirus δ3, influenza virus NS1, human p58 IPK , C NS5A of hepatitis virus, K3L of vaccinia virus, Tat of HIV virus, human nc886, Us11 of herpes simplex virus, and ICP34.5 of herpes simplex virus, and one or more selected from the group consisting of orthologs thereof; 3. A method according to claim 1 or 2.
- ヘルパーウイルス非存在下でマイナス鎖RNAウイルスまたはウイルスベクターを製造する、請求項1~3のいずれか一項に記載の方法。 The method according to any one of claims 1 to 3, wherein the minus-strand RNA virus or viral vector is produced in the absence of a helper virus.
- 前記ゲノムRNAが、制御配列に作動可能に連結したPKR阻害性の因子をコードする遺伝子をさらに有する、請求項1~4のいずれか一項に記載の方法。 The method according to any one of claims 1 to 4, wherein said genomic RNA further comprises a gene encoding a PKR inhibitory factor operably linked to a regulatory sequence.
- 前記パッケージング細胞が、制御配列に作動可能に連結したPKR阻害性の因子をコードする遺伝子を有するゲノムDNAを有する、請求項1~5のいずれか一項に記載の方法。 The method according to any one of claims 1 to 5, wherein the packaging cell has genomic DNA having a gene encoding a PKR inhibitory factor operably linked to a regulatory sequence.
- 前記パッケージング細胞が、Vero細胞またはLLC-MK2細胞である、請求項1~6のいずれか一項に記載の方法。 The method according to any one of claims 1 to 6, wherein the packaging cells are Vero cells or LLC-MK2 cells.
- 前記パッケージング細胞が、Vero細胞からなる細胞集団またはLLC-MK2細胞からなる細胞集団であって、他の細胞を含まない細胞集団である、請求項1~7のいずれか一項に記載の方法。 The method according to any one of claims 1 to 7, wherein the packaging cells are a cell population consisting of Vero cells or a cell population consisting of LLC-MK2 cells and do not contain other cells. .
- PKR阻害性の因子のいずれか1以上をコードする遺伝子を発現可能に含む、マイナス鎖RNAウイルスまたはウイルスベクターのRNAゲノム。 An RNA genome of a negative-strand RNA virus or viral vector that expressably contains a gene encoding any one or more of the PKR inhibitory factors.
- 請求項9に記載のゲノムを含む、マイナス鎖RNAウイルスまたはウイルスベクター。 A minus-strand RNA virus or viral vector comprising the genome according to claim 9.
- 目的遺伝子をさらに含む、請求項10に記載のマイナス鎖RNAウイルスまたはウイルスベクター。 The minus-strand RNA virus or viral vector according to claim 10, further comprising a target gene.
- 請求項10または11に記載のマイナス鎖RNAウイルスまたはウイルスベクターを含む、組成物。 A composition comprising the negative-strand RNA virus or viral vector according to claim 10 or 11.
- 請求項9に記載のRNAゲノムをコードするDNA。 A DNA encoding the RNA genome according to claim 9.
- 制御配列に作動可能に連結された請求項13に記載のDNAを含む、遺伝子発現ベクター。
A gene expression vector comprising the DNA of claim 13 operably linked to regulatory sequences.
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CN202280045809.9A CN117651774A (en) | 2021-06-30 | 2022-06-29 | Method for producing minus-strand RNA viral vector and minus-strand RNA viral vector produced thereby |
EP22833215.1A EP4365298A1 (en) | 2021-06-30 | 2022-06-29 | Method of producing negative-strand rna virus vector and produced negative-strand rna virus vector |
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